Changed buildtools version and target sdk version in build.gradle
Also some coding style edits(now using android studio auto format for .gradle files)
Update to gradle 1.9 and android gradle plugin 0.7
Merge pull request #840 from Catrobat/gradle_buildtootls_update

Changed buildtools version and target sdk version in build.gradle
hotfix testContainsElement
Merge pull request #843 from Catrobat/fixContainsElementTest

hotfix testContainsElement
increase targetApi for lint checks
Merge pull request #844 from Catrobat/increaseTargetApi

increase targetApi for lint checks
merge with master conflict resolved
Merge branch 'LiveWallpaper_Master' of https://github.com/Catrobat/Catroid into LiveWallpaper_Master