Flotilla Chat

* Share your screen in calls * Redesign the content library * Add a location to profiles and a member map to the directory * Add a notifications tab to the home network section * Add a create post button to the home page and profiles * Remind people about calendar events they're going to * Record voice notes in a dialog, and go straight to the call in voice rooms * Add a nature theme, more emoji and kaomoji * Show rich link previews for links to spaces, rooms and profiles * Keep a message in the composer when it fails to send, instead of dropping it * Only raise notifications for new messages * Keep private mutes when saving content settings, and handle muted words from other clients * Keep edited listings and calendar events in their room * Fix stalled uploads, quotes that hadn't loaded, misplaced comments and the emoji picker overflowing