Improve application menu configuration
Application list in menu is not very easy to configure (it's a big hash in lemonldap-ng.ini).
We have to discuss on how manage application list in our next stable version. It seems it's maybe not a good practice to pass HTML code to templates. We should rather have methods that will return all authorized applications for a category.
We have maybe to simplify how application list can be build. For example, Myabe we should only accept 1 or 2 levels of category. Same idea, is this mandatory to have applications under applications? If we restrict this, it could be then easier to configure from a graphical point of view.