1592 committer not shown in versions (#1704) * Supply pushing user. * Code style. * Remove already executed data migration task. * Improve Commit model, add associations to User model. * Get rid of ambiguous class/module names. * Replace OntologyVersion#user by #pusher. * Display pusher information in OntologyVersions index. * Fix all the tests. * Add new tests. * Obey Hound. * Fix migration. * Add data migration for missing commits. * Add data migrations. * Shorten up method. * Remove unnecessary comment.
Replace be_nil, be_false, be_true by be(*).
Omit explicit `FactoryGirl.` on create and build.
Use one-liner before { ... } where possible.
Move user_test to rspec.
add two spec tests for PowerVacuum error.