Minor improvements and bug fixes.

Improvements

• [SI-2999] Updated the message presented by iOS14 when making calls. Recent privacy changes mean iOS warns about any app accessing the local network. We need this to support calls connecting to hosts on the local network.
• [SCSD-599] Favourites are now restored upon fresh install.

Bugs

• [SI-2998] Updated the Reply-To cells for video to be more specific about what’s shown.
• [SI-3022] Tidied up the layout of message thread cells.
• [SCSD-626] A link to the AppStore was incorrect. Only an issue when dealing with forced updates.