Run AsyncTask to get SQLiteDatabase instance
Run AsyncTask to get SQLiteDatabase instance

AsyncTask is extended to make GetDatabaseTask. On acquiring a readable database,
the task sets it to a private variable in parent class.

Signed-off-by: Neha Bagari <da5cf7d44773e2aef2bc8c75839dbf1408c63b83@iitbhu.ac.in>

venkateshshukla/th-editorial-android