More API improvements

server.py

@@ -25,14 +25,15 @@ class MyServer(BaseHTTPRequestHandler):
                 accounts = os.listdir('./db/accounts')
                 for acc in sorted(set(accounts)):
                     echo(self, acc)
+                return 0
 
             # lists accounts on a pretty HTML + CSS
             #  making sure there is no XSS possible on account names
             elif action ==		'mirrors':
                 html = igmirror.pixelfed_htmlfill_mirrors( igmirror.template('mirrors') )
-                echo(self, html)
+                return echo(self, html)
 
-            return
+            return echo(self, {'status': 'error', 'message': '1st parameter action not defined: {}'.format(action)})
 
         if len(parts) == 2:
             response(self, 200, 'json')