make language changeable

raven/i18n.py

@@ -2,7 +2,11 @@ import gettext
 import os
 from pathlib import Path
 
+from settingsstore import SettingsStore
+
+settings = SettingsStore.load()
 locale = os.environ['LANG'] if os.environ['LANG'] else "en"
+locale = settings.session.get('general', 'lang', fallback=locale)
 
 _ = False
 src_dir = Path(__file__).resolve().parent.parent