Added application projects to dashboard.

Added a way to look at application projects by giving a ptype parameter to the main page. Added an easy access through the /Application/ URL pattern, as asked. Added the datasource handling through GET args too. 
Props to @ewels for the redirect idea. Ended up doing it in php though.

dashboard_all.php replaces dashboard_all.html (the added php code is on lines 225-233, the rest is legacy)
index.php replaces index.html (but that is still only a symlink to dashboard_all.php)