Fix missing imports

gajim/command_system/implementation/middleware.py

@@ -34,7 +34,9 @@ don't need to dig up the code itself to write basic commands.
 from traceback import print_exc
 
 from gi.repository import Pango
+
 from gajim.common import app
+from gajim.common.i18n import _
 
 from gajim.command_system.framework import CommandProcessor
 from gajim.command_system.errors import CommandError, NoCommandError

gajim/command_system/mapping.py

@@ -25,6 +25,8 @@ according to the command properties.
 import re
 from operator import itemgetter
 
+from gajim.common.i18n import _
+
 from gajim.command_system.errors import DefinitionError, CommandError
 
 # Quite complex piece of regular expression logic to parse options and

gajim/common/contacts.py

@@ -26,6 +26,7 @@
 
 try:
     from gajim.common import caps_cache
+    from gajim.common.i18n import _
     from gajim.common.account import Account
     from gajim import common
     from gajim.common.const import Chatstate

gajim/logind_listener.py

@@ -25,6 +25,7 @@ import logging
 from gi.repository import Gio, GLib
 
 from gajim.common import app
+from gajim.common.i18n import _
 
 log = logging.getLogger('gajim.logind_listener')