Minor : add mime type to project illustration image
Merge remote-tracking branch 'upstream/master'
Popups - Use layer title instead of layer name
Minor debug in lizmap~default:index
Home - Add a button showing map metadata window
Home - enhance modal dialogs for project metadata
Home - return back to the project when closing metadata window
After login, rediecting where the user comes from #21

If a user logs in, he is redirecting to the projects list. But if a you user logs in from a map page, he wants to come back to the web page.

Jelix can do it if the param auth_url_return is set.