Added new script under the Administration menu
to create, update, and delete patron attribute types.
Some things to note:
- once an attribute is created, its code cannot be changed
- the repeatibility and unique_id settings of an
attribute type cannot be changed after creation -
this is to avoid having to deal with changing
constraints if an attribute type is already in use
by patron records
- an attribute type cannot be deleted if it is
used by any patron records
- this administration page is always displayed regardless
of the value of the ExtendedPatronAttributes syspref. If
the syspref is off, the page will prompt the superlibrarian
to turn it on if desired.
Signed-off-by: Joshua Ferraro <jmf@liblime.com>
