-Fixed export of data
-Added some fixes for QT5 compilation
- Integrated Ashwini's modifications (Merge request)
- Fixed crash with some clusterers
- Re-Added: Linear Projection classifier (PCA, (Fisher) LDA)
- Fixed: crash on input-dimension usage with GPR
- Fixed: crash on loading of several buggy datasets (parser issues)
- Fixed: regression on multivariate data did not repaint properly
-Changed: cosmetic changes to PCA faces