SVY-6869 dragging a ghost will change the cursor style on the glasspane
SVY-7061 faulty .spec files cause entire client or individual components
not to work, without any errors in Servoy Developer itself

parse problems in spec file or manifest are now reported as errors in
the problems view of the developer
SVY-6902 selection update now works with ghosts
SVY-6864 CTLR drag (did small improvements and fixed selection when
doing CTRL drag on multiple components)
use more correct url
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Merge remote-tracking branch 'origin/master' into SVY-6929