Quickfix for issue #822 and update of test.
Merge pull request #824 from Catrobat/issue#822

Fix for issue #822 and update of test.
fixed incrementUsage test case
quick fix for issue#808: Editing copied images corrupts original images and other copies

pass a copy (temp)of the image to paintroid.
Merge pull request #833 from Catrobat/issue#808

fix Issue#808: Editing copied images corrupts original images and other copies
This hotfix should be refactored.
update version to 14 and name to 0.9.7
Merge pull request #834 from Catrobat/updateVersionCodeAndName

update version to 14 and name to 0.9.7
Merge pull request #830 from Catrobat/incUsageTestFix

Fixed incrementUsage test case
Merge branch 'master' into DatatypeStringExperimental
update CHANGELOG.md with older releases
Update README.md
Merge branch 'master' into DatatypeStringExperimental