Configure Android Lint

[wb9688]

We should configure Android Lint in its lint.xml configuration to ignore stupid things like MissingTranslation, then fix remaining issues, and make builds fail when there's a Fatal or an Error, similar to the Checkstyle stuff.

[opusforlife2]

@wb9688 Is this different from that other linter issue?

[wb9688]

@opusforlife2: Yes, this one catches common Android-related errors, such as incorrect translations (that would cause crashes).

[ShareASmile]

Done by theimpulson.