Add cointainer() and record_list() filters to QueryParser

Add cointainer() and record_list() filters to QueryParser

The container() filter takes 3 or 4 positional params:
  - class (bre, acn, acp, au)
  - type  (bookbag, etc -- btype of the container)
  - id    (container id)
  - token (authtoken, optional, for checkin ownership of non-public containers)

The record_list() filter takes a list of record ids to restrict the search by.
These are bib ids by default, but are treated as metarecord ids in the presence
of the #metabib (aka #metarecord) modifier.

Signed-off-by: Mike Rylander <mrylander@gmail.com>