lp1744756 Profile Tree Display Entry Admin UI

lp1744756 Profile Tree Display Entry Admin UI

- Flesh out permission.group_tree_display_entries table.
- Create pgtde IDL class corresponding to new permission.group_tree_display_entries
table.
- Admin UI for Permission Group Tree Entries capable of viewing, adding, removing,
or changing position of entries within tree based on OU.
- Save functionality to persist any changes made.
- Persist changes in positions of permission group display
entries in Admin UI with the Profile Selector in the patron
edit interface.
- Make profile selector use original functionality if there are no
display entries.

Signed-off-by: Kyle Huckins <khuckins@catalyte.io>
Changes to be committed:
	modified:   Open-ILS/examples/fm_IDL.xml
	modified:   Open-ILS/src/sql/Pg/006.schema.permissions.sql
	new file:   Open-ILS/src/sql/Pg/upgrade/XXXX.schema.perm-group-display.sql
	new file:   Open-ILS/src/templates/staff/admin/local/permission/index.tt2
	new file:   Open-ILS/src/templates/staff/admin/local/permission/t_grp_tree_display_entry.tt2
	new file:   Open-ILS/src/templates/staff/admin/local/permission/t_pgtde_add_dialog.tt2
	modified:   Open-ILS/src/templates/staff/admin/local/t_splash.tt2
	modified:   Open-ILS/src/templates/staff/circ/patron/t_edit.tt2
	new file:   Open-ILS/web/js/ui/default/staff/admin/local/permission/app.js
	modified:   Open-ILS/web/js/ui/default/staff/circ/patron/regctl.js