SciDAVis - Improvements SVN-temp

- 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.

converted line endings to Unix style

- fixed line profile tool
- fixed creation of empty graphs
- added Table-constructor of class FFT to Python interface

- Fixes a bug in importing ASCII files introduced in rev 510;
- Improves exporting of 2D plots to vector formats, by automatically detecting the best page layout. Modified EpsExportDialog accordingly.