App Polish (#1098)

* App polish

- Skeleton avatar colour on app switching.
- Bug report icon and string.
- Semi-bold font on room list timestamps.
- Room attachments button spacing and alignment.
- Replace link tint with semi-bold font in AnalyticsSettingsScreen.
- Semi-bold font on Invites button.
- Add padding to media attachment sheet.
- Message composer header layout tweaks.
- Remove indicator after changing homeserver with an MXID.
- Change copy permalink string.
- Formatting of link in Analytics Prompt.
- Remove indicator after changing homeserver with an MXID.
- Change copy permalink string.
- Formatting of link in Analytics Prompt.
- Only semi-bold the room timestamp when unread.
- Tweak the colour of the date separator.
- Add activity indicator to toast style user indicator.

ElementX/Sources/Screens/Settings/AnalyticsSettingsScreen/View/AnalyticsSettingsScreen.swift

@@ -40,7 +40,6 @@ struct AnalyticsSettingsScreen: View {
         } footer: {
             Text(context.viewState.strings.sectionFooter)
                 .compoundFormSectionFooter()
-                .tint(.compound.textLinkExternal)
         }
         .compoundFormSection()
     }