Look rotation variable fix

this branch should fix look-variables and also clarifies some method-names in Look.java
some bricks still use old methods

VERSION become 0.7.1beta because of different interpretation of some look-variables 

testrun: http://catrobatgw.ist.tugraz.at:8080/job/Catroid-custom-branch-test/821/console
all server tests failed. maybe they pass the pullrequest-testrun.