[editcontrollers] Ensure entities are created in an order satisfying schema constraints. Closes #3031719 changes below are also necessary to make the whole thing works: * stop considering InlinedFormFile as eidparam field since they don't hold any value * rework 'pendingfields' handling to have separate processing of inlined fields whose subject entity is created during the edition

#!/bin/sh -e
if [ "$1" = "purge" ] ; then
        update-rc.d cubicweb remove >/dev/null
fi
 
#DEBHELPER#
 
exit 0