Issue 4697 - Add support for WebExtension-based Firefox development builds

sitescripts/extensions/bin/updateUpdateManifests.py

 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2016 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,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ skipping 104 matching lines @@
         if repoType == 'ie':
             writeIEUpdateManifest(manifestPath, extensions[repoType])
         else:
             # ABP for Android used to have its own update manifest format. We need to
             # generate both that and the new one in the libadblockplus format as long
             # as a significant amount of users is on an old version.
             if repoType == 'android':
                 newManifestPath = get_config().get('extensions',
                                                    'androidNewUpdateManifestPath')
                 writeAndroidUpdateManifest(newManifestPath, extensions[repoType])
-            template = get_template(get_config().get('extensions', '%sUpdateManifest' % repoType))
+            path = get_config().get('extensions', '%sUpdateManifest' % repoType)
+            template = get_template(path, autoescape=not path.endswith('.json'))
             template.stream({'extensions': extensions[repoType]}).dump(manifestPath)
 
 
 def updateUpdateManifests():
     """
     updates all update manifests with the current versions
     """
 
     parser = SafeConfigParser()
     getDownloadLinks(parser)
     writeUpdateManifest(parser)
 
 if __name__ == '__main__':
     updateUpdateManifests()