Vuln admin tmpl

Templated admin part of vulnerability-db (reusable for other applications).
Clashing JS and CSS are managed.
NOTE: currently the header and footer template of the vulnerability admin pages isn't the same of other pages of the site, must be factorized properly.
Perhaps uncapitalized would make it nicer in the GUI, because it would result into something like "Select function to change" instead of "Select Function to change"