Test passes

Now when running distclean ALL files generated by the ./bootstrap && ./configure && make are deleted.
Maybe it's not a good idea because it's not the purpose of distclean target...

Created groups (they can be found under the "Modules" menu -_- )
Created new pages : on LeAPI EditorialModel Plugins etc

No need of -d flag to specifiy directories

- add a -L options to list availables actions

- Allow to extend easily lodel_admin.py script.
- Writtent first lodel_admin.py action : discover-plugins