buttons now work

refactored code so don't need one method for every button
Pricing and inventory data now sent
Push previous 2 changes
Push previous 2 changes
Added pricing activity
Merge branch 'master' of https://github.com/patrickhulce/food-stand-tracker

Conflicts:
	FruitStandTracker/src/edu/upenn/cis350/project/InventoryActivity.java
	FruitStandTracker/src/edu/upenn/cis350/project/WeatherActivity.java