implemented multiple unpacking

implemented two tests for unpacking per actionbar

implemented quantity strings
Merge pull request #766 from Catrobat/gsocMultipleUnpacking

Gsoc multiple unpacking
Removed unused class.
Superfluous formatting.
Merge branch 'master' into cucumber-test

# By Patrick Koch
# Via Patrick Koch (1) and Stefan Jaindl (1)
* master:
  implemented multiple unpacking