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