application website validation, don't link to app website if website isn't set,
also comment out animated boost icon from #464 until it's consistent with non-animated version

A couple of places were using "reblog" rather than "boost" - this updates them to match the web UI

Better initial state for unlisted/nsfw toggles

coming in via Salmon.

Currently no way to prevent remote follows, but they will only receive public
and unlisted posts

Reflect "requested" relationship in API and UI
Reflect inability of private posts to be reblogged in the UI
Disable Webfinger for locked accounts

fix #361 with rich OEmbed display via iframe, fix #237 by hiding sensitive
content behind a spoiler on public pages

Closes: #337

Closes: #334

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

Fix #233, fix #268

e

silenced mode + edits

From https://github.com/doorkeeper-gem/doorkeeper-i18n/blob/master/rails/locales/fr.yml

From https://gist.github.com/qsypoq/4cf3b858ff8242ffb013