added col headers to csv output

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

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

moved forking config to config files - dev server faster without forks, deployment optimum with fork = 2; moved hires timer to immediately either side of vep script loop; deleted vep input file from /tmp if exists due to generation using append mode (in case previous run aborted before unlink) event; output format tweaks

escaped spaces in tt a name var; changed production env flag to deployment