Move feeds screen into common navigator, handle usages (#4365)

* Move feeds screen into common navigator, handle usages

* Add link to Feeds from home screen (#4366)

* Add link to feeds to home screen header

* Center logo

* Replace icons

* Tweak spacing

* Tweak spacing

* Swap icon, sizing

* Buttonize, size

* Make menu same alignment on all screens

* Remove FeedsTab support, enable drawer swipe on MessagesTab

* Add note

* Vertically align header

* Swap in Pin

* Use hashtag icon

* Remove png

* Fix reference

* Ensure alignment with home and other screens

src/view/screens/Notifications.tsx

@@ -163,7 +163,7 @@ export function NotificationsScreen({}: Props) {
   return (
     <CenteredView
       testID="notificationsScreen"
-      style={s.hContentRegion}
+      style={[s.hContentRegion, {paddingTop: 2}]}
       sideBorders={true}>
       <ViewHeader
         title={_(msg`Notifications`)}