lp1748277 Patron Reg Long Field Doc Overlapping

lp1748277 Patron Reg Long Field Doc Overlapping

- Restructures the Patron Registration/Editor template to have
better scaffolding in place, keeping the alert pane from overlapping
with fields.

- Adds a z-index level of 3 to the Registration alert pane, ensuring it
stays above form controls wihtin input groups.

Signed-off-by: Kyle Huckins <khuckins@catalyte.io>
	modified:   Open-ILS/src/templates/staff/circ/patron/register.tt2
	modified:   Open-ILS/src/templates/staff/circ/patron/t_edit.tt2
	modified:   Open-ILS/src/templates/staff/css/circ.css.tt2