A small updates to skeleton project:
- added MD5 utility class
- added method to display rounded size with Mb,Gb postfixes: see Utils.getRoundedSize
- added joinString utility method
- added methods to convert dp->px px->dp
- added methods to calculate array max/min without Collections
- updated Bugsense to Mint

Biggest changes are in database layer.
- SQLiteTable now recognizes autoincrement property and removes such columns from statements
- BaseSQLiteDB was refactored allowing to have multiple different databases
- DatabaseHelper was moved to a separate class
- DataSQLiteDB is a new abstraction for DBs that require onCreate/onUpgrade
- AssetsSQLiteDB is an abstraction for asset-provided sqlite DBs -> works with SQLiteAssetHelper (compile 'com.readystatesoftware.sqliteasset:sqliteassethelper:+')
- A SampleModel was added showing how db layer can be implemented for a BasicModel