+ improved TestLabelControlVisibleValue to check visibility because label can be invisible together with edit.+ removed TestTextBoxVisibleEnabledCaption() because in DSL projects textboxes are not used.Related to Issue [DSB-527]
although previous implementation led to "green" test result, it's not correct, because Clone() should give a copy of the object back. Let it be fallen, but correct.Related to Issue [DSB-514]