fix template over-escaping + python 3 support ...

The templates were html escaping the generated js code for the
autofill and the role management. This was breaking these features.
It's okay to not escape these as they are coming from a trusted source
(configuration file).

Also make the templates python3 compatible (not need to import Set in
python 3)

fix unicode

prefixing all form attributes to differenciate between types

implementing displaying roles and standalone groups in modify form

better notifications ...

* longer delay
* different color for enable and disable

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

adding descriptions for roles

fix typo

changing colors of the role switches

implementing roles switchs on forms

adding files for groups and roles management