Fix authentication failure warning log messages for FEDERATION_USER

Dariusz Bywalec

2016-01-04 5274e12c7cc19451355082418f78004c4d97e263

 src/test/java/com/gitblit/tests/mock/MemorySettings.java

@@ -48,6 +48,11 @@
   }

   @Override
   public boolean saveSettings() {
      return false;
   }

   @Override
   public boolean saveSettings(Map<String, String> updatedSettings) {
      return false;
   }