Translation preparation and some webgui code

ymsgui.py

@@ -14,6 +14,7 @@ Configuration file located at ~/.config/ymsgui.conf:
 import os
 import sys
 import locale
+import gettext
 import configparser
 
 import gi
@@ -89,9 +90,12 @@ def messagebox(messagetext, symbol=None, title=None, parent=None):
 
 if __name__ == "__main__":
     locale.setlocale(locale.LC_ALL, '')
+    gettext.bindtextdomain('ymsgui', 'locale')
+    gettext.textdomain('ymsgui')
+    _ = gettext.gettext
     config = configparser.ConfigParser()
     if not config.read(os.path.expanduser(cfg['cfgfile'])):
-        messagebox("Configuration file not found", title="YMS")
+        messagebox(_("Configuration file not found"), title="YMS")
     else:
         cfg['host'] = config.get('DB', 'host')
         cfg['db'] = config.get('DB', 'db')
@@ -103,6 +107,6 @@ if __name__ == "__main__":
             app.run()
             db.disconnect()
         else:
-            messagebox("Database connection cannot be established", title="YMS")
+            messagebox(_("Database connection cannot be established"), title="YMS")
 
 # Another fine product of the sirius cybernetics corporation