no bricks are required to show the first look

This semantic change seems to be more straightforward and easier to use.

Changed in this commit:
 * Catrobat-Language version update to 0.9
 * If there's a look in the object it will be shown by default
 * Adapted and refactored test case plus a new one

__Jenkins:__
https://jenkins.catrob.at/job/Catroid-Multi-Job-Custom-Branch/281/

SetVariableTest.testCreateNewUserVariableAndDeletion:
https://jenkins.catrob.at/view/Catroid/job/Catroid-single-UI-emulator/163/
(seems to be unstable - 1/3)