Fix regression from refactoring

regression was introduced in e2383fd7a4

gajim/chat_control_base.py

@@ -47,6 +47,7 @@ from gajim.common import events
 from gajim.common import app
 from gajim.common import helpers
 from gajim.common import ged
+from gajim.common import i18n
 from gajim.message_control import MessageControl
 from gajim.conversation_textview import ConversationTextview
 from gajim.message_textview import MessageTextView
@@ -514,7 +515,7 @@ class ChatControlBase(MessageControl, ChatCommandProcessor, CommandTools):
             # use the default one
             lang = app.config.get('speller_language')
             if not lang:
-                lang = app.LANG
+                lang = i18n.LANG
         gspell_lang = Gspell.language_lookup(lang)
         if gspell_lang is None:
             gspell_lang = Gspell.language_get_default()

gajim/conversation_textview.py

@@ -562,7 +562,7 @@ class ConversationTextview(GObject.GObject):
                         % phrase_for_url
             else:
                 link = 'http://%s.wikipedia.org/wiki/Special:Search?search=%s'\
-                        % (app.LANG, phrase_for_url)
+                        % (i18n.LANG, phrase_for_url)
             item = Gtk.MenuItem.new_with_mnemonic(_('Read _Wikipedia Article'))
             id_ = item.connect('activate', self.visit_url_from_menuitem, link)
             self.handlers[id_] = item
@@ -578,7 +578,7 @@ class ConversationTextview(GObject.GObject):
                             % phrase_for_url
                 else:
                     link = 'http://%s.wiktionary.org/wiki/Special:Search?search=%s'\
-                            % (app.LANG, phrase_for_url)
+                            % (i18n.LANG, phrase_for_url)
                 id_ = item.connect('activate', self.visit_url_from_menuitem, link)
                 self.handlers[id_] = item
             else: