Replaced get_ead_title and get_collection_from_pid with the methods in https://github.com/mkorcy/tdl_hydra_head/blob/master/lib/tufts/model_methods.rb at commit 9414c074b77762f72fbe93975a855289a1f1e5f9
Replaced deprecated ActiveFedora load_instance call with call to find(), and wrapped call in begin rescue to catch error raised when an object can't be found.