[web/navigation] use add_onload instead of inline javascript href
This way our javascript code isn't thrown out by the html cleaner e.g. when
using the rql rest directive and a table view.
To make things simpler, we now always use ajax URLs for navigation,
even when we would previously have used regular links.
Closes #3501626
#!/bin/sh -e
if [ "$1" = "purge" ] ; then
update-rc.d cubicweb remove >/dev/null
fi
#DEBHELPER#
exit 0