Checkstyle: Add 'WhitespaceAfter' check, fix some violations

.checkstyle.xml

@@ -6,7 +6,7 @@
 <module name="Checker">
     <property name="charset" value="UTF-8"/>
     <property name="severity" value="warning"/>
-    <property name="fileExtensions" value="java, properties, xml"/>
+    <property name="fileExtensions" value="java"/>
 
     <module name="SuppressWarningsFilter" />
 
@@ -32,6 +32,7 @@
             <property name="format" value="TODO(?! #\d+:)|FIXME"/>
         </module>
         <module name="GenericWhitespace"/>
+        <module name="WhitespaceAfter"/>
         <module name="AvoidStarImport"/>
         <module name="RedundantImport"/>
         <module name="UnusedImports"/>

src/main/java/fr/xephi/authme/service/ValidationService.java

@@ -161,7 +161,7 @@ public class ValidationService implements Reloadable {
             if (restriction.startsWith("regex:")) {
                 restriction = restriction.replace("regex:", "");
             } else {
-                restriction = restriction.replaceAll("\\*","(.*)");
+                restriction = restriction.replace("*", "(.*)");
             }
             if (ip.matches(restriction)) {
                 return true;

src/main/java/fr/xephi/authme/service/bungeecord/BungeeReceiver.java

@@ -99,7 +99,8 @@ public class BungeeReceiver implements PluginMessageListener, SettingsDependent
         try {
             argument = in.readUTF();
         } catch (IllegalStateException e) {
-            ConsoleLogger.warning("Received invalid plugin message of type " + type.get().name() + ": argument is missing!");
+            ConsoleLogger.warning("Received invalid plugin message of type " + type.get().name()
+                + ": argument is missing!");
             return;
         }