[mod] update skill models to fit data
[enh] add __unicode__ to skill
[enh] add command to import skills tree
[mod] rename depend skill field
[enh] import skills dependancies
[mod] correctly set rubrique to every skill
[mod] skill.level should be an index
[mod] change a bit skill __unicode__
[enh] yay, display skills
[enh] do a detail page for skills for the professor
[fix] was adding is_a_dependance_off insteand of depends_on
[enh] display dependancies of a skill on the professor page
[enh] list skill that depends on the current skill
[mod] misc
[mod] try to organise a bit more
[enh] install angularjs
[enh] configure angularjs
[enh] button to regenerate the student password in angularjs
[enh] funny command to plot skills tree
[mod] add more stuff to gitignore