Acq: large parts of the UI for making claims to a vendor against lineitems

Acq: large parts of the UI for making claims to a vendor against lineitems

Large parts of this are done, but not yet all of them.  Woof.  If lineitems
are claim-ready (have an attached claim policy, which has claim event types
that have intervals that have passed since the items were ordered), and you
want to find them with no search criteria other than ordering agency, then
you can issue claims and print a very primitive voucher.  Bits of niceness
are still to come, such as attaching policies, claiming from other LI table-
based interfaces, etc.

git-svn-id: svn://svn.open-ils.org/ILS/trunk@16282 dcc99617-32d9-48b4-a31d-7c20da2025e4