* Settings now use the database instead of SharedPreferences (which are
bad)
* Changed many constants to now be ENUMs.
* Changed some character mappings which were too big.
* Added limit to number of results returned to stop crash.
* Changed Lang id so can do binary operations on it
* Removed some old code
* Multilingual backend support with initial Russian language support
* Updater service to update the database in the background, and overhauled
backend access
* Fixed long pressing numbers in Lang mode would not input digit
* Fixed Add Word not behaving as you would expect
* Some other minor fixes
