Xref table overhaul. Uniqueness enforced, coupled with insert-then-query execution order in DBEntryAdaptor.

Data patching is slow.

ENSCORESW-166. Switched to bringing back the DB release and only asking to remove the DB if it was not the same as the current user submitted release

Adding the no_alias check to the get_species_and_object_type() method to avoid warning about the lack of a lookup DB

load_registry_from_db - load the stable ids lookup database if found; get_species_and_object_type - use the stable id lookup database if found

ENSCORESW-159. Fix for issue found with coding_region_start which was using the wrong method in the transcript object.

bringing the example into line with the new 'get_adaptor' method, rather than the old 'db adaptor' way