SciDAVis - Improvements SVN-temp

- Improved handling of numerical precision.
- Improved handling of active windows in folders.
- Fixed 2D plot curve range reports.

- DataReaderTool now displays correct table information for curves having date/time format.
- Fixed printing of canvas frame for 2D plots.
- Fixed printing/PDF export of pie plots.
-Fixed bugs: 011071 (SetColumnValues make qtiplot crush), 011072 (cascade make graph collapse) and 011070 (Graph geometry unstable when reopen project).

- fixed typo in German translation
- improved display of column comments when columns get resized

- reset class Table to the Q3Table-based version (rev. 504)
- merged the trunk changes from rev 508 to 518 into Table
- merged some changes from rev 507 (mostly remaning)
- adjusted some other files accordingly

- creating new development branch for new model/view-based Table and Matrix classes

- removing old development branch

- fixed some Table-related bugs
- reconverted several files to Unix format

- Implemented printing of cropmarks for 2D plots.

fixed problems with SIP 4.6 and cleaned up some includes

Implemented Feature Request #3399: Page Layout for multiple plots.