Remove remaining GoogleCharts code and update documentation

James Moger

2014-04-10 e2dfad080a46368950f387c88103561e07c9afa6

 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;
   }