LP#1446860 Staff were able to edit their own accounts.

LP#1446860 Staff were able to edit their own accounts.

This change reverses what appears to be a thinko in the
original programming.  If the editing user is the same
as the user being edited, disable the Save button.

Signed-off-by: Chris Sharp <csharp@georgialibraries.org>
Conflicts:
	Open-ILS/web/js/ui/default/actor/user/register.js

LP#1446860 - Correct mistaken logic in previous fix.

See https://bugs.launchpad.net/evergreen/+bug/1446860/comments/2
for reference.  The logic was not enforcing the "if the editing
staff member doesn't have permission to edit a user in this
permission group" check.  This corrects that.

Signed-off-by: Chris Sharp <csharp@georgialibraries.org>