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
Fix rating not working
* Fixed rating not working because of android.os.NetworkOnMainThreadException
  (moved rating into seperate thread)
* Fixed green rating bar being off center
* Removed Log messages left over from debugging
Fixed a function which doesn't work
* Moved commenting to it's own thread (CommentThread) to avoid exceptions
* When starting the rating process, the bar will now show 5 green stars
Merge pull request #2 from Suyooo/master

Bug Fixes + Layout Changes