Tjis is quite confusing as the welcome page is designed for when
you're not logged in, ie. has a sign-in button. There's also no way
to get back into the app so it really looks like it's logged you
out.
Reverts 116367fd69
It can take some time to actually set the status message and see it play back as
a committed event. This adds a spinner for immediate feedback so it's clear
that something is happening.
Fixes https://github.com/vector-im/riot-web/issues/8135.
This updates the custom status context menu to match the latest comps. A single
button is used for setting / clearing, depending on what is appropriate.
The state logic is also changed to depend on events and storage from js-sdk for
the committed status message. This makes it easy to distinguish the value being
edited from what's currently committed.
