Merge pull request #2 from chrox/master

add missing gettext and Menu module
Merge remote-tracking branch 'upstream/master'
add missing require for defining DEBUG
Merge pull request #337 from hwhw/master

add missing require for defining DEBUG in ConfigDialog
missing require() of infomessage in UIManager

require() must be done locally in order to not create circular dependencies
Merge pull request #339 from hwhw/master

missing require() of infomessage in UIManager
add missing require of gettext
Merge pull request #342 from hwhw/master

add missing require of gettext