Fixes jazzband#82 TypeError: can only concatenate list (not "tuple") to list

Author: nschlemm

dbtemplates/management/commands/sync_templates.py

@@ -16,6 +16,7 @@
 DIRS = []
 for engine in _engine_list():
     DIRS.extend(engine.dirs)
+DIRS = tuple(DIRS)
 app_template_dirs = get_app_template_dirs('templates')