Adding some comments to FoodProfileStacker to explain what it does. Refactoring the TextView names in FoodProfileFragment.
Refactoring how fragments get loaded and how they are listened to. MainActivty is now the listener for a stack of FoodProfiles, and holds that stack for easier access.
Merge pull request #18 from heymattlauer/FoodProfileRefactoring

Food profile refactoring
Committing again