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/SettingsScreen/View/SettingsScreen.swift

@@ -122,7 +122,7 @@ struct SettingsScreen: View {
             
             // Report Bug
             Button { context.send(viewAction: .reportBug) } label: {
-                Label(L10n.actionReportBug, systemImage: "ladybug")
+                Label(L10n.commonReportABug, systemImage: "ladybug")
             }
             .buttonStyle(.compoundForm(accessory: .navigationLink))
             .accessibilityIdentifier("reportBugButton")