deleting also user-variables when deleting sprite
fixed copying of sprites

refactored copy if bricks
refactored copy loop bricks
refactored copy user variable bricks
added test for if bricks for copy sprite
set background not clickable in actionmode
remove warnings and script copy entry in scriptfragment
Merge branch 'fixcopysprite' into issue#329

Conflicts:
	catroid/src/org/catrobat/catroid/ui/fragment/SpritesListFragment.java
unrefactored certain variables
refactored variables again
fixed references of loops
fixed references of conditions
fixing some reference issues and test cases
refactored testcase and fixed it
Merge branch 'master' into issue#329
new catrobat version 0.7.2beta and new language version 0.7
fixed catrobat language version on two other places
added assertions to test copying of formulas
referenced versions to contants
code reviewing changes
Merge branch 'master' into issue#329

Conflicts:
	catroid/src/org/catrobat/catroid/ui/fragment/SpritesListFragment.java
Merge pull request #346 from Catrobat/issue#329

reviewed by @felly, @sjaindl, @threesn