all_gdor_records tests look for collection record based on collection_type not display_type
hydrus coll tests:  display type is now 'file' not 'hydrus_xxx'
updated comments on a couple shared examples
first set of updates for new display_type values and some refactoring of shared examples
shared examples begin to speak item-level merge
added item-level merge tests for Batchelor
revise tests on all merged DOR items to include more merged fields and corrected regexp
change batchelor to expect 184 merged items
revisions to beef up tests for All DOR item objects merged
add a way to get ckeys of any merged item records that got updated in Symphony and lost their gdor-ness
change shared examples to get ids of errant records in the error message diffs
change all_gdor_recs to get ids of errant records in the error message diffs
merged item specs now accommodate any number of merged items within a single collection
add collection_with_title and file_id to fields tests for DOR item objects
McLaughlin maps is now an item level merge collection
shortened spec desc
spec_helper: silence warnings about top level variables; remove unnec code in solr_response
move shared examples for collection gdor fields present down
fix regex for collection_with_title test
add MLM to item level merge tests