Remove unnecessary page. from tests.

    find features/steps spec -iname '*.rb' | xargs perl -lapi -e 's/(?<=[ (])page\.(?!should)//'

I propose we forget the Hound warning for now since this is an automatic refactoring commit and manually fixing those would miss the automatic part.

Let's fix all of them on a separate refactor someday.
Prefer single-quoted strings when you don't need string interpolation or special symbols.