We now also cache text for records that have no 856$u but have 520$a subfields.
We now also cache text for records that have no 856$u but have 520$a subfields.

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools