SciDAVis - Improvements SVN-temp

- fixed unnecessary window remanings when loading project files
- fixed crash in ApplicationWindow::openSurfacePlot() caused by
empty window labels
- fixed wrong line break in Graph::saveCurveLayout()
- fixed segmentation fault in Graph::plotPie()
- replaced obsolete Qt3Support method QStringList::gres()
with QStringList::replaceInStrings()
- ran 'lupdate' to remove obsolete location tags

- Moved Convolution/Deconvolution operations to a new stand-alone class.

- Fixed inserting of columns in tables.

- Fixed handling of 2D plots transparency.
- Modified accordingly the AxisDialog and PieDialog.
- Modified the filesave_xpm icon in order to increase the displayed size.

- Fixes a small problem with the height of Matrix rows.
- Fixes bug in reading of recent project files from user settings on Windows.

- Fixed bugs in AxesDialog and improved its layout.
- Derived the TextFormatButtons class from QWidget instead of QGroupBox, in order to avoid the problems with the setFlat() method in Qt4.

- fully ported class Matrix to Qt4
- tested class Matrix thoroughly, it should be
ready for a release now
- added doxygen comments to Matrix.h
- fixed some doxygen comments in other files
- fixed "Hide Window" operation activated from
a windows title bar
- changed all line endings in the files I
edited back to dos style

- Added an "Antialiasing" option to the "general" tab of the AxesDialog.
- Got rid of some C style nrutil code and includes.

- Added support for antialiasing in 2D plots.
- Fixed a bug in saving/restoring user settings for 3D plots.
- Added an "Autoscale" user option for 3D plots.

- Fixed a crash occuring when changing the source matrix in a 3D plot.
- Cleaned the code in order to take profit of the QFileDialog::DontConfirmOverwrite option.