Added updated dictionary.
The Application now loads all the words and definitions to a map(to allow the application to be restored) instead of accesing the DB when passing to the next word(See CreateGameAsync on MainActivity).
A progress Dialog is shown at the start of the application(when loading the words).
Class Word has a new attribute(active_def), this attribute is the random definition.
Added color change to the active letter
Added Word to be Serializable, change wordMap to contain Pair<Word, Integer>
Fixed button Home issue.

Added class Pair to replace android.util.Pair since this one is not
serializable.
Changed color and size when a letter is selected.
Merge pull request #2 from martinaLopez/master

Added state saving and updated Json files.