fixes #683
relates to #571

This was a bit of a journey:
https://github.com/matrix-org/matrix-doc/pull/3471
But it should work now and we now use the UIAHandler everywhere.

fixes #670

Add support for listing devices that do not support encryption, add support for logging out devices.

Ticks off another box in #23!

Hi if you're reading this commit message wondering "what the fuck?"

The file ending list is translated, so all the translations are updated
too.

This ports the leave room dialog to QML, everywhere. There are now no differences between the various leave dialogs.

Showing the bootstrap state and showing there are unverified devices is
still missing.

Added support for refreshing the device list, marking current device with a checkmark instead of a lock

* Added a text field that allows choosing custom homeserver in "Room directory" dialog.

* Moved "Choose custom homeserver" text field to the right and shrinked it to 30% of "Room directory" dialog's width.

* Adding "server_name=" when needed when joining room.

When joining room that is hosted on a different homeserver than
the account is registered on, the request fails. In such scenario
the server has to be explicitly mentioned in a server_name URL
parameter. More info here:
https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-join-roomidoralias



* Minor fix: intentation (4 spaces -> 8 spaces)

Co-authored-by: Patryk Cisek <patryk@cisek.email>

- Fixes scrolling to an event not being reliable
- Adds new /goto command that can open URLs, go to events, or go to message indexes.
- Refactored ChatPage::handleMatrixUri() to contain the handling originally in Nheko::openLink(), and makes it return a boolean based on whether the URL was handled internally or not.

If this is still broken, we will need to disable it again.