[Full Changelog](https://github.com/vector-im/riot-web/compare/v1.5.15...v1.5.16-rc.1) * Upgrade React SDK to 2.4.0-rc.1 and JS SDK to 5.3.0-rc.1 * Update from Weblate [\#13078](https://github.com/vector-im/riot-web/pull/13078) * Mention Jitsi support at the .well-known level in Jitsi docs [\#13047](https://github.com/vector-im/riot-web/pull/13047) * Add new default home page fallback [\#13049](https://github.com/vector-im/riot-web/pull/13049) * App load order tweaks for code splitting [\#13032](https://github.com/vector-im/riot-web/pull/13032) * Add some docs about Jitsi widgets and Jitsi configuration [\#13027](https://github.com/vector-im/riot-web/pull/13027) * Bump minimist from 1.2.2 to 1.2.3 in /electron_app [\#13030](https://github.com/vector-im/riot-web/pull/13030) * Fix Electron mac-specific shortcut being registered on Web too. [\#13020](https://github.com/vector-im/riot-web/pull/13020) * Add a console warning that errors from Jitsi Meet are fine [\#12968](https://github.com/vector-im/riot-web/pull/12968) * Fix popout support for jitsi widgets [\#12975](https://github.com/vector-im/riot-web/pull/12975) * Some grammar and clarifications [\#12925](https://github.com/vector-im/riot-web/pull/12925) * Don't immediately remove notifications from notification trays [\#12861](https://github.com/vector-im/riot-web/pull/12861) * Remove welcome user from config [\#12894](https://github.com/vector-im/riot-web/pull/12894)