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/HomeScreen/View/HomeScreen.swift

@@ -154,7 +154,7 @@ struct HomeScreen: View {
                     Label(L10n.actionInvite, systemImage: "square.and.arrow.up")
                 }
                 Button(action: feedback) {
-                    Label(L10n.commonReportABug, systemImage: "questionmark.circle")
+                    Label(L10n.commonReportABug, systemImage: "ladybug")
                 }
             }
             Section {