Added name and GO term projections for 6 new species - dolphin, hyrax, tariser, megabat, kangaroo rat, alpaca.

Add BINARY flag to meta.meta_value to make it case sensitive when doing UNIQUE comparisions (especially for Gallus/gallus)

species_id column in the meta table.

Unit-tests passes.

database in new().

Swap accession and label data in xref table and leave linkage_xref column blank for direct_xref table

Allow score column in protein_feature to be null. Needed for user upload and to be consistent with protein_align_feature and dna_align_feature.

translation id can be passed when a new ProteinFeature is created so it can be later stored in the database (protein_feature table)

database names and making sure none of them are picked out when looking
for core (single species) databases.

Reformat of get_all_db_adaptors().