SciDAVis - Improvements SVN-temp

- some more bug fixes

- some small bug fixes
- version changed to 0.1.1

- fixed bug in several dialogs leading to a freeze
- fixed bug #1843235: Error in saving date format

- fixed bug in Graph3D
- fixed bug in CurvesDialog

- fixed a bug in Graph3D

- fixed crash when pasting data with inconsistent tabs

- fixed empty project explorer when starting for the first time

- fixed bug #1813115: scidavis crashes when opening column
or axic options menue
- fixed some Grid related issues

- removed AbstractAspect from the base classes of
AbstractSimpleFilter since I think an undo aware
class that manages the filter is better than implementing
undo commands for all filters
- improved AbstractSimpleFilter
- improved SimpleCopyThroughFilter
- wrote a SimpleMappingFilter and added a test case
for it to the column unit test

- did some renaming for consitancy and to avoid naming conflicts
- polished/improved AbstractFilter and AbstractSimpleFilter