3DFV and multiple fixes

This MR includes a bunch of new features and fixes:

1. Improved Miura Matching
2. Revamped preprocessor
3. Fixed Maximum Curvature
4. Use configuration files for all settings
5. Adaptations to the new bob.bio.base interfaces
6. New database support: 3D fingervein

changed the description

mentioned in commit 37d62f41

merged