implementing custom js

multiple modification/fix ...

* add display_name parameter for backend
* handle display_name in modify template (lonely groups) and error
  message
* fix bug in modify when user is in only one backend
* remove redondant exception in ad/ldap backend
* fix unit test accordingly
* fix License in AD backend (GPLv3 -> MIT, previously tought of using
  samba4 python library which is GPL, but this module finaly uses
  python-ldap which is MIT compatible)

adding global exception handler

disable autofill for modify forms

implementing various autofill javascript functions

implementing lcDisplayName

using onchange instead on onkeyup

implement hooks to call autofill functions

adding autofill js file in base templates

adding skeleton of autofill functions

adding js to replace diacritic char in js

adding a redirected to the originaly requested page on login ...

user not authenticated and requesting an url are redirected to
the signin page with the requested page url as the query string (in
base64). It permits to redirect them to the requested page once they
've log in.

fix html in error template

various fixes in html + unit tests on html

fix missing </span> in login form

fix favicon

adding logo for ldapcherry

implementing frontend password policy check

enable error message for not valid/empty fields

fix unicode

make the key attribute not modifiable in modify form

using html fieldset

prefixing all form attributes to differenciate between types

fix form input string list

fix confirmation

begin implementing confirmation for deleting user

implementing displaying roles and standalone groups in modify form

begin implementing modify user form

fix templates on list of attributes

adding notification on addes user