changed the pause menu to be a dialog

Added an interface to game controller in order to handle the user's
selection on the menu
Changed the menu to be just a button
Fixed the crash for How to, and Glossary

However now the activity stack is weird
Merge branch 'Pause_Menu'

Conflicts:
	BusinessSim/gen/com/game/businesssim/R.java
	BusinessSim/src/com/game/businesssim/MarketFragment.java