SciDAVis - Improvements SVN-temp

the QMdiWindow functionality in a class AspectView which
will be the base class of all views that are to be
display in the mdi area
- Table and TableView are not aware of each other which
solves some more problems with passing information or
events up and down the aspect hierarchy (this is a
move away from the MVC to the MVP paradigm)
- fixed the crash when adding columns to a Table
- the options tabs are now properly notified when
an aspect name or comment changes
- still TODO: fix context menu when clicking on
the headers (coordinate mismatch in
TableView::contextMenuEvent())