Port 795f0107d2 to glitch-soc

Port 248df68c36 to glitch-soc

Fixes #678

Port 2bbec9f4da to glitch-soc

Port ac092d03e7 to glitch-soc

Defaults to false.

Ctrl+click usually allows opening a link in a new tab. This
was prevented for hashtag or user links in toots.

Port e0b1e17bd0 to glitch-soc

Port cdb101340a to glitch-soc,
but without dropping support for regexp filters yet.

Port d9b2f84c92 to glitch-soc

Port 904a2479dd to glitch-soc

As we are already using the new getSnapshotBeforeUpdate lifecycle method,
we apparently cannot use the deprecated ones at all in this component.

Port 23106844a1 to glitch-soc

Inspired from b6003afcdb but using component
properties instead of redux store for hidden/revealed state.

Port the video-player part of 036dd98abb to
glitch-soc. MediaGallery part ignored since it has diverged quite a bit.

This fixes #423

Port 77406d3a09 to glitch-soc

Port 86a9de6753 to glitch-soc