better notifications ...

* longer delay
* different color for enable and disable

adding the notify javascript

implementing notification to explain automatic adding of roles

adding js to better handle parent/sub roles ...

now js functions automatically enables parent roles of a selected
roles, and disables sub roles unselected role

fix unit tests + add graph method ...

* fix unit tests on roles (adding mandatory description)
* adding a method to get roles graph in json

adding descriptions for roles

fix typo in default configuration

fix typo

fixing two columns layout

implementing form on two column

changing colors of the role switches

implementing conditional navbar ...

* implementing navbar that displays actions the user is authorized to do

fix default configuration

implementing roles switchs on forms

adding files for groups and roles management

implementing adding default values to form

adding bootstrap switch to base template

adding bootstrap switch

implementing a method to get groups to remove ...

* implement a way to remove roles from a user
  without removing groups of roles the user keeps

implementing oriented graph for roles

create reverse structure to deduce which roles a group belongs

removing trailling spaces

adding unit tests

copying dictionnary

adding a flatten method in roles

simplify roles configuration (backend groups)

adding basic js validation for forms

narrower forms

handle fixed value while displaying it in form

name the attributes of the add form