changed package of pocketpaint

as discussed with our Pocket Paint team the package of their app in Play
will be changed to ```org.catrobat.paintroid```
Merge pull request #640 from Catrobat/paintroidPackageChange

changed package of pocketpaint
fixed missing spaces in bricks
Merge pull request #643 from Catrobat/newLineFix

fixed missing spaces in bricks
Merge branch 'master' into issue#626