Without them, some features like proper density icons only worked after the
first update, but not on the first index update itself since the version
defaulted to 0.
Android's lint will give warnings for all strings that are not translatable
or translated. Some strings like repo name/description and language codes
should never be translated. Here's how to officially mark as "do not
translate":
* for individual strings, include: translatable="false"
* for the entire file, name it: donottranslate.xml
http://tools.android.com/recent/non-translatablestringshttps://code.google.com/p/android/issues/detail?id=75163
