Merge pull request #5020 from damycra/django_manage_migrate_changed_filter

Reports changed status from django_manage migrate

library/web_infrastructure/django_manage

@@ -155,6 +155,9 @@ def loaddata_filter_output(line):
 def syncdb_filter_output(line):
     return ("Creating table " in line) or ("Installed" in line and "Installed 0 object" not in line)
 
+def migrate_filter_output(line):
+    return ("Migrating forwards " in line) or ("Installed" in line and "Installed 0 object" not in line)
+
 def main():
     command_allowed_param_map = dict(
         cleanup=(),