-Added LeakCanary as part of debug build.
-Modified bookmark list to show both remote and local playlists.
-Removed ability to save channel items as local playlist, in favor of subscribe.
-Merged stream record manager into history record manager.
-Removed subject-based history database actions.
-Merged normalized history table into watch history fragment.
-Modified history fragments to use long click for delete actions.
-Refactored DAO operations from search fragment to record manager.
-Added index to search history table on search string.
-Fix baseplayer round repeat not detected by discontinuity.
-Added UI for watch history and most played fragments.
-Added stream state table for storing playback timestamp and future usage.
-Enabled playlist deletion.
Add search and watch history
* Make MainActicity a single task
* Remove some casting
* SearchFragment: start searching when created with query
* Handle settings change in onResume
* History: Log pop up and background playback
* History: Add swipe to remove functionallity
* Enable history by default
* Use stream item
* Store more information about the stream
* Integrate history database into AppDatabase
* Remove redundant casts
* Re-enable date converters
* History: Use Rx Java and run DB in background
* Also make HistoryDAO extend BasicDAO
* History: RX-ify swipe to remove
* Sort history entries by creation date
* History: Set toolbar title
* Don't repeat history entries
* Introduced setters so we can update entries in the database
* If the latest entry has the same (main) values, just update it
