Probable fix for Issue#490 and Issue#491
Refactor GlideToAction
Refactor Look.
Refactor Look and Actions.
Add getters and setters in user interface dimension for all look parameters.
Updated and refactored all Actions and ActionTests.
Rename rotation to direction in Look.
Get direction of look returns values between -179 and 180.
Refactor Actions.

Remove integer casting for positions of sprites in ChangeX/YByNAction.
Refactor IfOnEdgeBounceAction, MoveNStepsAction including tests.
Fix TurnRight, TurnLeft and PointIn.
Add direction test in Look.
Refactor Look, IfOnEdgeBounceAction and ChangeSizeByNActionTest
Refactor IfOnEdgeBounceActionTest.
Add delta to ChangeSizeByNActionTest.
Merge branch 'master' into RefactorActions
Add missing assert messages and bounce at corner tests in IfOnEdgeBounceActionTest
Merge pull request #504 from Catrobat/RefactorActions

Refactor actions