This can be a virtual ip or the real one, otherwise it just won't
work.  Relax the previous restriction.

Added ability to change the hostname and admin email in Proxy

Using this version, it will already be possible to "delete" (sub)menus from inherited structures, using the visibility="delete" tag on an item.

(legacy) remove javascript autoloading, all occurrences of it where replaced except the index/dashboard handling.