convert old language version to current on load
increased version
removed unused version texts
fix some tests
Merge pull request #815 from Catrobat/quickfixDebug

convert old language version to current on load
One test fails, but update is urgent
add changelog file
Clean up catroid projects

Remove unnecessary casts
Organize imports
Format code
Convert for into for-each loops
Merge pull request #816 from Catrobat/addChangelog

add changelog.txt
Merge pull request #817 from Catrobat/cleanUpProjects

Clean up catroid projects
Physic-Integration, create packages and Datatypes,

first step, not yet used
physic integration- modify, actions, new classes

add: physicactions; physicfactory modify: Sprite, Project
add bricks, layouts, res
Merge branch 'physic_master' of https://github.com/Catrobat/Catroid into physic_master