User definable regex for forming the swissprot entry retrieval query from sequence ID

The current query method uses the whole of the sequence ID string as a text query to srs over uniprot. This can break (try having pdb: in the id string) in may ways, or at least not retrieve what the user might want.

If there is no associated database ID for a sequence, then it should be possible to specify how the ID string is transformed into a particular query. This could go further to have a set of regex's :
   1. http:query? Regex->Query transform
   2. ...
Where the query applied for a particular sequence is the first one that yields a proper regex transformation match.