Since the initial key backup can take several minutes for some users, this moves
the upload step to the background. The create key backup flow now only marks
all sessions for backup synchronously, with the actual backup happening later.
The key backup panel in Settings gains a new row to show a summary of upload
status. Users are directed there if they wish to know if the backup is done.
The text in various related dialogs has also been tweaked to fit the new flow.
* Put a cancel button on the first page of the create key backup
dialog
* Move settings logic into the room reminder: I know this is moving
logic *into* a view but RoomView is quite heavyweight as it is.
* Give the recovery reminder an explicit 'onDontAskAgainSet' rather
than onFinished which was getting called with false when the last
screen of the dialog was closed with the cancel 'x' rather than
the 'close' button.
https://github.com/vector-im/riot-web/issues/8066
Including unused substitutions triggers console logs, so change the key backup
panel to only substitute what's actually used in each message.
Fixes https://github.com/vector-im/riot-web/issues/8047.
All of the anchors were pointed at `#` which, when clicked, would trigger a hash change in the browser. This change races the change made by the screen handling where the screen handling ends up losing. Because the hash is then tracked as empty rather than `#/login` (for example), the state machine considers future changes as no-ops and doesn't do anything with them.
By using `preventDefault` and `stopPropagation` on the anchor click events, we prevent the browser from automatically going to an empty hash, which then means the screen handling isn't racing the browser, and the hash change state machine doesn't no-op.
After applying that fix, going between pages worked great unless you were going from /login to /home. This is because the MatrixChat state machine was now out of sync (a `view` of `LOGIN` but a `page` of `HomePage` - an invalid state). All we have to do here is ensure the right view is used when navigating to the homepage.
Fixes https://github.com/vector-im/riot-web/issues/4061
Note: the concerns in 4061 about logging out upon entering the view appear to have been solved. Navigating to the login page doesn't obliterate your session, at least in my testing.
