Replaced QAMoveTo, QASelect and QAShiftSelect draw commands with vmoveto and vselect
Moved vselect and vmoveto draw commands to ViewerTest_ViewerCommands.cxx
Replaced QAMoveTo and QASelect in test cases. Corrected returned error case result in vselect and vmoveto.
Added commands in ViewerTest_ViewerCommands from QADraw. Edited tests.
QACommands in tests were replaced with ViewerTest commands.
QAxwd command was removed from QADraw. Edited command wzoom and commands from ViewerTest.
Help for ViewerTest commands was edited
Small corrections. Added test cases for polygonal selection.
Small correction of test cases
