Issue 2898 - Stop updating our update manifest for Firefox development builds

sitescripts/extensions/bin/createNightlies.py

 # coding: utf-8
 
 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2015 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
@@ skipping 554 matching lines @@
           self.readSafariMetadata()
         else:
           self.readGeckoMetadata()
 
         # create development build
         self.build()
 
         # write out changelog
         self.writeChangelog(self.getChanges())
 
-        # write update.rdf file
-        self.writeUpdateManifest()
+        # write update manifest
+        if self.config.type != 'gecko':
+          self.writeUpdateManifest()
 
         # update documentation
         self.updateDocs()
 
       # retire old builds
       versions = self.retireBuilds()
 
       if self.config.type == 'ie':
         self.writeIEUpdateManifest(versions)
 
@@ skipping 34 matching lines @@
     except Exception, ex:
       logging.error("The build for %s failed:", repo)
       logging.exception(ex)
 
   file = open(nightlyConfigFile, 'wb')
   nightlyConfig.write(file)
 
 
 if __name__ == '__main__':
   main()