Updated supporting client lib

Change-Id: I4482933faae41aa611ff0f9a3c6b4b057b2ddab2
Added database manager

Change-Id: I3ba2a69d5030e6f7cac8387173667e79b5b9dfac
Merge branch 'deal-favouriting' of github.com:matt-allen/hukd-android
Changed Toasting to Logging for image download