[web/views/formrenderer] remove `cubicweb:target` attribute on form once the target <iframe> is inserted For some unknown reason, IE9 does not want to submit the form inside the <iframe> when the ``cubicweb:target`` attribute exists. (closes #5377672)

missing-dep-for-interpreter make => make | build-essential | dpkg-dev (usr/share/pyshared/cubicweb/skeleton/debian/rules.tmpl)