New layout, splitting up Activity
+ New layout, using ActionBarSherlock to keep compatibility with Android
  before 3.0. This library is not included in this. Layout has been tested on
  Samsung Galaxy S+ 4.2.2 Cyanogenmod, Samsung Galaxy S2 2.3.3 Stock, Asus
  Nexus 7 4.3 ParanoidAndroid
+ Split up SherlockActivity into the Fragments MenuFragment, MealFragment and
  CommentFragment
* A bunch of fixes, chagnes and additions I did while I was already
  restructuring everything
o TODO: ImageButton mealPicture is hidden on MealFragment if there is no
  picture available - which means it's impossible to press it in order
  to upload one.
o TODO: Different layouts depending on screen size, to fit it better on
  landscape views or tablet screens