Update dead gforge.inria.fr and eodev.sourceforge.net URLs in the
module-level Doxygen index pages (eo, mo, moeo, smp, DTLZ). Replace
with GitHub URLs and current contact information.
- use single doxyfile instead of one per module
- use a cleaner and more modern style
- reorder sections to put details first
- hide diagrams by default
- remove deprecated doxygen variables
- disable latex generation by default
- fix some doc typos