moved all db queries to NGS::DB; added download facility for processed data; new MySQL ngs db for download data

major rewrite of test scripts - adapted for D2 version .154 - replaced D2::Test with Plack::Test; new NGS::Test Import::Base class

updated test scripts to work with previous app upgrade (eg tests merged db)

major upgrade - app uses vep api_version to look for available cache types (ensembl, refseq, merged) and disables any from selection if not available; results page displays api version and selected cache database; vep wrapper captures vep.pl stderr for display on results page; added vcf 'filter' col to results page; enabled HGVS notation function

added log_dir info to deployment config for compliance with recent D2 upgrade; new test of file upload using LWP::Protocol::PSGI as replacement for depracated D2::Test