#605 Logger - name methods after their log level

- Remove separate print stacktrace method
- Log level into the log similar to console output

src/main/java/fr/xephi/authme/security/crypts/BCRYPT.java

@@ -38,7 +38,7 @@ public class BCRYPT implements EncryptionMethod {
         try {
             return hash.getHash().length() > 3 && BCryptService.checkpw(password, hash.getHash());
         } catch (IllegalArgumentException e) {
-            ConsoleLogger.showError("Bcrypt checkpw() returned " + StringUtils.formatException(e));
+            ConsoleLogger.warning("Bcrypt checkpw() returned " + StringUtils.formatException(e));
         }
         return false;
     }

src/main/java/fr/xephi/authme/security/crypts/CryptPBKDF2Django.java

@@ -32,7 +32,7 @@ public class CryptPBKDF2Django extends HexSaltedMethod {
         try {
             iterations = Integer.parseInt(line[1]);
         } catch (NumberFormatException e) {
-            ConsoleLogger.showError("Could not read number of rounds for CryptPBKDF2Django:"
+            ConsoleLogger.warning("Could not read number of rounds for CryptPBKDF2Django:"
                 + StringUtils.formatException(e));
             return false;
         }

src/main/java/fr/xephi/authme/security/crypts/IPB4.java

@@ -36,7 +36,7 @@ public class IPB4 implements EncryptionMethod {
         try {
             return hash.getHash().length() > 3 && BCryptService.checkpw(password, hash.getHash());
         } catch (IllegalArgumentException e) {
-            ConsoleLogger.showError("Bcrypt checkpw() returned " + StringUtils.formatException(e));
+            ConsoleLogger.warning("Bcrypt checkpw() returned " + StringUtils.formatException(e));
         }
         return false;
     }

src/main/java/fr/xephi/authme/security/crypts/XFBCRYPT.java

@@ -31,7 +31,7 @@ public class XFBCRYPT implements EncryptionMethod {
         try {
             return hash.getHash().length() > 3 && BCryptService.checkpw(password, hash.getHash());
         } catch (IllegalArgumentException e) {
-            ConsoleLogger.showError("XfBCrypt checkpw() returned " + StringUtils.formatException(e));
+            ConsoleLogger.warning("XfBCrypt checkpw() returned " + StringUtils.formatException(e));
         }
         return false;
     }