wrap image urls in pandora.getMediaURL to add option to load image from another domain

pandora/app/config.py

@@ -57,6 +57,7 @@ def load_config():
         settings.DEFAULT_FROM_EMAIL = config['site']['email']['system']
         settings.SERVER_EMAIL = config['site']['email']['system']
         config['site']['videoprefix'] = settings.VIDEO_PREFIX
+        config['site']['mediaprefix'] = settings.MEDIA_PREFIX
         config['site']['version'] = get_version()
         config['site']['dontValidateUser'] = not settings.AUTH_CHECK_USERNAME
         if not 'folderdepth' in config['site']:

pandora/settings.py

@@ -195,6 +195,8 @@ USE_IMDB = False
 #if you set VIDEO_PREFIX make sure cookies work accros subsomains
 VIDEO_PREFIX=''
 #VIDEO_PREFIX = '//video{uid}.example.com'
+MEDIA_PREFIX=''
+#VIDEO_PREFIX = '//media.example.com'
 #SESSION_COOKIE_DOMAIN = '.example.com'
 
 SESSION_COOKIE_AGE=60*24*60*60