add Gaps to set of 'findable' features
cosmetics
make missing polypeptide an info event instead of an error
add transactions to PopulateLuceneIndices
make Gap features retain '-' characters when indexed
add feature classes for additional types

adds classes for primary_transcript, promoter, sequence_variant and
splice_site
increase AspectJ memory limit

required to build w/o iajc errors on pcs-genedb-dev
Merge pull request #89 from satta/work

Address search/index issues