Merge pull request #1 from Suyooo/master

New UI
version 2.0
version 2.1: fix min. sdk version.
version 2.2: fix version number for play store.
Split SigfoodActivity into two activities
+ MenuFragment is now SigfoodActivity. MealFragment and CommentActivity have
  been moved to MealActivity.
+ Changed SigfoodApi classes to implement Serializable, so they can be used
  in Intents
* Fixed minSDK and targetSDK to avoid "menu button of shame"
* Fixed upload button showing on side dishes
Merge branch 'master' of https://github.com/cody82/sigfood

Conflicts:
	sigfood-android/AndroidManifest.xml