>name|description

Now also loads xref descriptions

Modify gene description priority list so we get Anopheles_symbol descriptions in preference to anything else if they're there.

load_registry_from_db will now only load the databases that match the correct software version and not necessarily the latest versions

Support for having multiple taxon IDs for the same species - species.species_id no longer primary/unique.

Species-specific stuff for anopheles; for now just use defaults. Should be OK - may need to add description filtering later.

a bug fix to column allele_string in transcript_variation table. The error is caused by a deletion, such as TTG/- in CTTGTT so the allele_string should be LV/L rather than LV/-

Made regulatory_factor and regulatory_feature part of enum in object_xref so that they can have xrefs assigned to them.

Changed name and structure of regulatory_factor_transcript.