Haml template now (correctly) uses assigned title/subtitle.

What you assign isn't always exactly what shows up in #assigns within your view. It's easy to forget exactly how many layers of FM are being dealt with. Pffft.

RSpec: 20 examples, 0 failures
Script: 0 tests: 0 failures, 0 errors, 0 pending, 0 omitted
RuboCop: 11 files inspected, no offenses detected
RuboCop global overrides in `.rubocop.yml`: 2