Bringing in a new method which allows us to retrieve the last inserted identifier into the table this adaptor is working with via DBI. Should be called from within an execute block so we do not need to wrap this in a work_with_dbh call

Brought in a new method for getting single value meta items from the meta table. This is then used in MetaContainer for just about every call reducing duplicated logic.

there's no ontology database available.

compare dumps.

Don't drop the backup table.

Dump tables with --skip-opt so that one can use diff to diff them if one
wants to.

Do not drop the backup tables.

Specific logic for assignment of gene names and description valid for all Ensembl Genomes species at the exception of a few species (e.g. S. pombe or S. cer)