Merge branch 'database_tests' into 'master'

Fixed database test to incorporate the no_zt option from !80; closes bob.bio.spear#28

Closes bob.bio.spear#28

See merge request !89
12 jobs for 86-in-evaluate-py-there-is-no-way-of-using-both-4-and-5-column-score-files in 15 minutes and 55 seconds (queued for 6 seconds)