SciDAVis - Improvements SVN-temp

- Fixed hang on MacOSX during graph import from Origin
- Added grid settings import from Origin
- Added import of *.ogg files(Origin graph)

- Improved the PlotDialog: it can now be extended to show the plot window explorer or shrinked to show only the basic controls.

Deleted PieDialog files, since PlotDialog now handles every kind of plot curve.

- Changed the behaviour of PlotDialog, AxesDialog and LayerDialog.

- fixed crash when rightclicking on a table

- ported class Table from Q3Table to QTableWidget
(status: compiles but still has some issues to fix)
Remark: Renamed Table::tableCols() and tableRows()
to numCols()/numRows() for consistent naming with
class Matrix; both methods are used in many files

- Fixed scaling of fonts in 2D plots.
- Added a "Recalculat"e item to the Matrix menu.

- fixed German translation of [Del] and [Return] keys

- added German translation for "Ctrl" and "Shift"

- ran "lupdate" and fixed the german keyboard shortcuts