fix NullPointerException in ITicketService and add TestCase

Kevin Walter

2014-04-14 4868740ed7f40ce0cf162f17a8224856ae10a4b0

 src/main/java/com/gitblit/models/ServerSettings.java

@@ -58,4 +58,8 @@
   public boolean hasKey(String key) {

      return settings.containsKey(key);

   }



   public SettingModel remove(String key) {

      return settings.remove(key);

   }

}