Lint fixes for 0.14.2

This PR is required by https://github.com/novoda/sqlite-analyzer/pull/10 in order to be able to update buildtools to 0.14.2.
Specifically, this fixes some Lint errors which made the build fail with the newer buildtools:
* deprecated plugin `android` replaced with `com.android.aplication`
* ignored "package not included error" for classes in generated cache
* qualified version number for sqliteassethelper