Added optional argument to get_all_DBEntries and get_all_DBLinks which is the database name. Use like in sql statment so percentage sign can be used for wild cards etc.

added order as an optional argument to list_dbIDs, mosy useful for genes and transcripts so caching is maximised

Don't calculate or store small (1000 bp) block size as this isn't used by the web code or anywhere else.

added parent to the unmapped_object table to allow adding what the parent was for depenednet xrefs etc

Make target connection details default to source if not specified.