diff --git a/pom.xml b/pom.xml
index 138f017c..d487788a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,8 +11,7 @@
     <name>AuthMeReloaded</name>
     <description>The first authentication plugin for the Bukkit API!</description>
     <inceptionYear>2013</inceptionYear>
-    <url>http://dev.bukkit.org/bukkit-plugins/authme-reloaded/</url>
-    <!-- See also: https://www.spigotmc.org/resources/authme-reloaded.6269/ -->
+    <url>https://github.com/AuthMe/AuthMeReloaded</url>
 
     <organization>
         <name>AuthMe-Team</name>
@@ -55,31 +54,31 @@
     </licenses>
 
     <properties>
-        <!-- Project properties -->
+        <!-- Build cycle properties -->
+        <project.skipExtendedHashTests>false</project.skipExtendedHashTests>
+
+        <!-- Environment properties -->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <jdk.version>1.8</jdk.version>
+        <java.version>1.8</java.version>
+        <maven.minimumVersion>3.3.9</maven.minimumVersion>
 
-        <!-- Output properties -->
+        <!-- Dependencies versions -->
+        <spigot.version>1.13.1-R0.1-SNAPSHOT</spigot.version>
+
+        <!-- Versioning properties -->
         <project.outputName>AuthMe</project.outputName>
         <project.buildNumber>CUSTOM</project.buildNumber>
-        <project.skipExtendedHashTests>false</project.skipExtendedHashTests>
         <project.versionCode>${project.version}-b${project.buildNumber}</project.versionCode>
+        <project.finalNameBase>${project.outputName}-${project.version}</project.finalNameBase>
 
-        <!-- BukkitPlugin properties -->
-        <bukkitplugin.name>${project.outputName}</bukkitplugin.name>
-        <bukkitplugin.version>${project.versionCode}</bukkitplugin.version>
-        <bukkitplugin.main>${project.groupId}.${project.artifactId}.${bukkitplugin.name}</bukkitplugin.main>
-        <bukkitplugin.authors>Xephi, sgdc3, DNx5, timvisee, games647, ljacqu, Gnat008</bukkitplugin.authors>
-
-        <!-- Change Bukkit Version HERE! -->
-        <bukkit.version>1.13-R0.1-SNAPSHOT</bukkit.version>
+        <!-- Plugin description file properties -->
+        <pluginDescription.name>${project.outputName}</pluginDescription.name>
+        <pluginDescription.version>${project.versionCode}</pluginDescription.version>
+        <pluginDescription.main>${project.groupId}.${project.artifactId}.${pluginDescription.name}</pluginDescription.main>
+        <pluginDescription.authors>Xephi, sgdc3, DNx5, timvisee, games647, ljacqu, Gnat008</pluginDescription.authors>
     </properties>
 
-    <prerequisites>
-        <maven>3.3.9</maven>
-    </prerequisites>
-
     <!-- Jenkins profile -->
     <profiles>
         <!-- Set the buildNumber using the jenkins env. variable -->
@@ -109,8 +108,9 @@
     </profiles>
 
     <build>
-        <defaultGoal>clean install</defaultGoal>
-        <finalName>${project.outputName}-${project.version}-noshade</finalName>
+        <defaultGoal>clean package</defaultGoal>
+        <!-- Little hack to make the shade plugin output a file with the right name -->
+        <finalName>${project.finalNameBase}-noshade</finalName>
 
         <resources>
             <resource>
@@ -132,25 +132,51 @@
         </resources>
 
         <plugins>
+            <!-- Enforce build environment -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-enforcer-plugin</artifactId>
+                <version>1.4.1</version>
+                <executions>
+                    <execution>
+                        <id>enforce-environment</id>
+                        <goals>
+                            <goal>enforce</goal>
+                        </goals>
+                        <configuration>
+                            <rules>
+                                <requireMavenVersion>
+                                    <version>3.3.9</version>
+                                </requireMavenVersion>
+                            </rules>
+                            <fail>true</fail>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <!-- Clean the target folder content -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-clean-plugin</artifactId>
                 <version>3.1.0</version>
             </plugin>
+            <!-- Include resource files -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-resources-plugin</artifactId>
                 <version>3.1.0</version>
             </plugin>
+            <!-- Compile and include classes -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.8.0</version>
                 <configuration>
-                    <source>${jdk.version}</source>
-                    <target>${jdk.version}</target>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
                 </configuration>
             </plugin>
+            <!-- Generate test coverage reports -->
             <plugin>
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
@@ -170,6 +196,7 @@
                     </execution>
                 </executions>
             </plugin>
+            <!-- Unit testing -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
@@ -181,17 +208,24 @@
                     <systemPropertyVariables>
                         <project.skipExtendedHashTests>${project.skipExtendedHashTests}</project.skipExtendedHashTests>
                     </systemPropertyVariables>
+                    <!-- Don't trim stack traces -->
+                    <trimStackTrace>false</trimStackTrace>
                 </configuration>
             </plugin>
+            <!-- Generate a jar containing classes and resources -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
                 <version>3.1.0</version>
             </plugin>
+            <!-- Generate a jar containing the source javadoc -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
                 <version>3.0.1</version>
+                <configuration>
+                    <finalName>${project.finalNameBase}</finalName>
+                </configuration>
                 <executions>
                     <execution>
                         <id>attach-javadoc</id>
@@ -199,23 +233,16 @@
                             <goal>jar</goal>
                         </goals>
                     </execution>
-                    <execution>
-                        <id>aggregate-javadoc</id>
-                        <goals>
-                            <goal>aggregate</goal>
-                        </goals>
-                    </execution>
                 </executions>
-                <configuration>
-                    <finalName>${project.outputName}-${project.version}</finalName>
-                    <show>public</show>
-                    <failOnError>false</failOnError>
-                </configuration>
             </plugin>
+            <!-- Generate a jar containing the java sources -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
                 <version>3.0.1</version>
+                <configuration>
+                    <finalName>${project.finalNameBase}</finalName>
+                </configuration>
                 <executions>
                     <execution>
                         <id>attach-sources</id>
@@ -224,10 +251,8 @@
                         </goals>
                     </execution>
                 </executions>
-                <configuration>
-                    <finalName>${project.outputName}-${project.version}</finalName>
-                </configuration>
             </plugin>
+            <!-- Generate a jar containing classes, resources and shaded libraries -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
@@ -241,9 +266,12 @@
                     </execution>
                 </executions>
                 <configuration>
+                    <!-- Don't create the reduced pom file, as we don't deploy the shaded jar -->
                     <createDependencyReducedPom>false</createDependencyReducedPom>
+                    <!-- Deploy the non shaded jar as main artifact -->
                     <shadedArtifactAttached>true</shadedArtifactAttached>
-                    <finalName>${project.outputName}-${project.version}</finalName>
+                    <!-- Use the base jar name, to help server owners download the right jar -->
+                    <finalName>${project.finalNameBase}</finalName>
 
                     <!--
                     Relocate all lib we use in order to fix class loading errors if we use different versions
@@ -299,15 +327,15 @@
                             <pattern>at.favre.lib</pattern>
                             <shadedPattern>fr.xephi.authme.libs.at.favre.lib</shadedPattern>
                         </relocation>
+                        <relocation>
+                            <pattern>org.postgresql</pattern>
+                            <shadedPattern>fr.xephi.authme.libs.org.postgresql</shadedPattern>
+                        </relocation>
                         <!-- bStats metrics class -->
                         <relocation>
                             <pattern>org.bstats</pattern>
                             <shadedPattern>fr.xephi.authme.libs.org.bstats</shadedPattern>
                         </relocation>
-                        <relocation>
-                            <pattern>org.postgresql</pattern>
-                            <shadedPattern>fr.xephi.authme.libs.org.postgresql</shadedPattern>
-                        </relocation>
                     </relocations>
                     <filters>
                         <!-- Ignore manifest signatures for shading the project into an uber-jar to fix -->
@@ -323,27 +351,31 @@
                     </filters>
                 </configuration>
             </plugin>
+            <!-- Install the jars as artifacts into the local repository -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-install-plugin</artifactId>
                 <version>2.5.2</version>
             </plugin>
+            <!-- Deploy the jars as artifacts into the remote repository -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-deploy-plugin</artifactId>
                 <version>2.8.2</version>
             </plugin>
+            <!-- Handle documentation generation, required by other plugins -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-site-plugin</artifactId>
                 <version>3.7.1</version>
             </plugin>
+            <!-- Publish coveralls test coverage reports, not included in the build cycle by default -->
             <plugin>
                 <groupId>org.eluder.coveralls</groupId>
                 <artifactId>coveralls-maven-plugin</artifactId>
                 <version>4.3.0</version>
                 <configuration>
-                    <!-- The secret token is provided with a command-line parameter! -->
+                    <!-- The secret token is provided with a command-line parameter -->
                     <failOnServiceError>false</failOnServiceError>
                 </configuration>
             </plugin>
@@ -357,10 +389,16 @@
             <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots</url>
         </repository>
 
-        <!-- Essentials Repo -->
+        <!-- CodeMC Repo (Contains many required libraries) -->
         <repository>
-            <id>ess-repo</id>
-            <url>http://repo.ess3.net/content/groups/essentials</url>
+            <id>codemc-repo</id>
+            <url>https://repo.codemc.org/repository/maven-public/</url>
+        </repository>
+
+        <!-- EssentialsX Repo -->
+        <repository>
+            <id>enderzone-repo</id>
+            <url>https://ci.ender.zone/plugin/repository/everything</url>
         </repository>
 
         <!-- ProtocolLib Repo -->
@@ -381,12 +419,6 @@
             <url>http://nexus.hc.to/content/repositories/pub_releases</url>
         </repository>
 
-        <!-- Our Repo (Many libs) -->
-        <repository>
-            <id>codemc-repo</id>
-            <url>https://repo.codemc.org/repository/maven-public/</url>
-        </repository>
-
         <!-- bStats Repo -->
         <repository>
             <id>bstats-repo</id>
@@ -511,7 +543,7 @@
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-            <version>${bukkit.version}</version>
+            <version>${spigot.version}</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
@@ -766,22 +798,12 @@
             </exclusions>
         </dependency>
 
-        <!-- Essentials plugin -->
+        <!-- EssentialsX plugin -->
         <dependency>
             <groupId>net.ess3</groupId>
-            <artifactId>Essentials</artifactId>
-            <version>2.13.1</version>
+            <artifactId>EssentialsX</artifactId>
+            <version>2.15.0</version>
             <scope>provided</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.bukkit</groupId>
-                    <artifactId>bukkit</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.bukkit</groupId>
-                    <artifactId>craftbukkit</artifactId>
-                </exclusion>
-            </exclusions>
         </dependency>
 
         <!-- BCrypt implementation -->
diff --git a/src/main/java/fr/xephi/authme/datasource/SQLite.java b/src/main/java/fr/xephi/authme/datasource/SQLite.java
index 93b7f48a..fe7260ec 100644
--- a/src/main/java/fr/xephi/authme/datasource/SQLite.java
+++ b/src/main/java/fr/xephi/authme/datasource/SQLite.java
@@ -75,6 +75,8 @@ public class SQLite extends AbstractSqlDataSource {
 
     /**
      * Initializes the connection to the SQLite database.
+     *
+     * @throws SQLException when an SQL error occurs while connecting
      */
     protected void connect() throws SQLException {
         try {
@@ -90,6 +92,8 @@ public class SQLite extends AbstractSqlDataSource {
 
     /**
      * Creates the table if necessary, or adds any missing columns to the table.
+     *
+     * @throws SQLException when an SQL error occurs while initializing the database
      */
     @VisibleForTesting
     protected void setup() throws SQLException {
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 8df9a180..027da3dc 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -1,9 +1,9 @@
-name: ${bukkitplugin.name}
-authors: [${bukkitplugin.authors}]
+name: ${pluginDescription.name}
+authors: [${pluginDescription.authors}]
 website: ${project.url}
 description: ${project.description}
-main: ${bukkitplugin.main}
-version: ${bukkitplugin.version}
+main: ${pluginDescription.main}
+version: ${pluginDescription.version}
 api-version: 1.13
 softdepend:
     - Vault