modified gmg to use plugin media_types and converted image media_type to new plugin style

mediagoblin/gmg_commands/dbupdate.py

@@ -42,7 +42,7 @@ class DatabaseData(object):
             self.name, self.models, self.migrations, session)
 
 
-def gather_database_data(media_types, plugins):
+def gather_database_data(plugins):
     """
     Gather all database data relevant to the extensions we have
     installed so we can do migrations and table initialization.
@@ -59,13 +59,6 @@ def gather_database_data(media_types, plugins):
         DatabaseData(
             u'__main__', MAIN_MODELS, MAIN_MIGRATIONS))
 
-    # Then get all registered media managers (eventually, plugins)
-    for media_type in media_types:
-        models = import_component('%s.models:MODELS' % media_type)
-        migrations = import_component('%s.migrations:MIGRATIONS' % media_type)
-        managed_dbdata.append(
-            DatabaseData(media_type, models, migrations))
-
     for plugin in plugins:
         try:
             models = import_component('{0}.models:MODELS'.format(plugin))
@@ -112,7 +105,6 @@ def run_dbupdate(app_config, global_config):
 
     # Gather information from all media managers / projects
     dbdatas = gather_database_data(
-            app_config['media_types'],
             global_config.get('plugins', {}).keys())
 
     # Set up the database