LP1100482 - Add max checked out indicator to patron interface

Patron exceeds max checked out indicator is not being displayed on patron page.

Created the indicator on the xul pages and the css to style it.  The js code
to hide and show indicator was there.

Signed-off-by: Kyle Tomita <ktomita@catalystitservices.com>
Signed-off-by: Ben Shum <bshum@biblio.org>