Return account instead of jid

gajim/common/app.py

@@ -486,7 +486,7 @@ def get_jid_from_account(account_name):
 def get_account_from_jid(jid):
     for account in app.config.get_per('accounts'):
         if jid == get_jid_from_account(account):
-            return jid
+            return account
 
 def get_our_jids():
     """