Adding multi language  preferences (Bahasa)

-Translating UI to Bahasa Indonesia (Settings > Language Selection)
Not 100% done because of too many strings in class files (halfway done
in moving them to strings.xml)
-Add several @Override, especially for back button at top left
And freedomofkeima joined the project ^_^
Merge pull request #45 from freedomofkeima/master

Adding multi language preferences (Bahasa).
anyway, 'Canceling' is the correct term, as the task won't be cancelled immediately :)