* Bug fixes:
- Document properly the template parameters of functions. No separate Parameters section.
* Improved formatting of functions and methods:
- Shorter latex code and shorter printed documentation
- Fixed indentation
- Parameter names are in italic instead of bold
* Words surrounded by stars are formatted in bold.
- there is a clear distinction between internal errors (aka bugs) and not supported input files (typically models which are not topological discs),
- internal errors trigger a test suite failure.
The main consequence is that OpenNL errors trigger now a test suite failure.