* .C ---> .cpp
* removed ../examples from paths
* moved some demo/example files out of doc_tex into their respective place
* now it should build properly, again
- added paragraph about exact arithmetic and algorithmic complexity (BL)
- concepts are now described at the begining of the user manual
- mesh cutting is better explained (picture provided by PA)
- improved description of available solvers
- reference pages are listed thematically in the reference manual
- Fixed UML diagrams in Software Design section
Other changes requested by PA:
- pictures of algorithms output in 2D (EPS)