Add Ukrainian localization file doorkeeper.uk.yml

Closes: #334

(without avatar). Also improved search position of exact matches

Replace “Unlisted mode” with “Do not show on public timeline”

Fix line endings for Portuguese locale

from accounts/tags because it's a terribly inefficient way to paginate
large sets of data

Devise, Doorkeeper, settings & general PT translation

Guide readers to production wiki page after Docker setup

Fix #233, fix #268

by updating it at least every 24h if the user visits the site

Add .env.test

Improve contrast for settings pages (fixes #173)

can be processed separately