Fixed GUI testing

Make GUI test use Qt5 Test module while running by modyfing
CMakeLists.txt file in test directory.

Change name of the moc file to correct one to properly trigger
automocking mechanism.

Fixed typo in compared strings.

Use of structure dereference instead of reference.
Some cleaning

Removed some unnecessary lines from CMakeLists.txt and broken
instruction in BoardSample.cpp.

Added TODO and FIXME comments for @tempaowca in DollarTest.cpp.