Remove of unnecessary saveProject calls.

Stage doesnt call saveProject after finishing or taking screenshot.
Remove of saveProject calls.
Possible Quickfix
Merge branch 'master' into issue#269
Merge branch 'master' into issue#269
Stage restart resets user variables.
Look reseting method.
Refactoring
Merge branch 'master' into issue#269
UserVariable readResolve()
Merge branch 'master' into issue#269
Adapted Ui test.
Refactoring
Merge branch 'master' into issue#269
Refactoring
Variables now reset before Stage starts.
Test adaption.
Merge branch 'master' into issue#269
Remove of XML altering
Merge branch 'master' into issue#269