MediaPlayer function added.

Raw folder added in res with audio files. Greetings screen can play two
tracks.
Phrase Menus Complete (almost).

All menus done. Some issue with string res, likely just my piece of shit
eclipse. Maybe shopping menu needs slight adjustment. Play function
needs a new name.
Fixed corrupted @Strings XML.
Back and Main Menu buttons complete.
Added one file and test package.
Testing and writing tests
Merge branch 'master' of https://github.com/Spacies/AudioPhrasebook

Conflicts:
	AudioPhrasebook/res/layout/activity_greeting_phrases.xml
	AudioPhrasebook/res/values/strings.xml