Move GardeningServer out of BuildSlaveSupport

Tools/GardeningServer/scripts/FailingTestsBugForm.js

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 101 matching lines @@
     _regressionRangeString: function() {
         var failingRevision = this._failingRevision();
         var passingRevision = this._passingRevision();
         if (!passingRevision || failingRevision - passingRevision <= 1)
             return 'r' + failingRevision;
         return 'r' + passingRevision + '-r' + failingRevision;
     },
 };
 
 FailingTestsBugForm.prototype.__proto__ = TestRelatedBugForm.prototype;