Fixing all rspec tests

When running `bundle exec rake` now all tests pass, whereas prior 5 were failing. Now we're down from 10 failing tests when running `rspec spec` to 6. Still seeing some `content-type missing in HTTP POST, defaulting to application/x-www-form-urlencoded. Use QNetworkRequest::setHeader() to fix this problem.` warnings with `rspec spec` as well. Will fix.