moved app messaging to Log::Report; validation of vep data before updating db tables; tests scripts test data insert to sqlite in-memory db; switched off console output of vep data structures for devel; trialing optional bootstrap 3.3.6 css
wrapped call to NGS::VEP in try/catch to handle die via 500.tt - works for tests as well; test for invalid filename; display list of valid filenames in upload page
extended download function to sample data, split existing vep & non-cds downloads into separate files; moved update_vep_table() function into new save_data() method
