Feeds tab fixes (#1486)

* Bold the saved feeds on mobile

* Improve the saved feeds loading state

* Add soft reset handler to feeds page

* Show feed descriptions in profile listing

* Add an 'about this feed' modal

* Fix type assertion

src/view/screens/Profile.tsx

@@ -187,7 +187,9 @@ export const ProfileScreen = withAuthRequired(
               />
             )
           } else if (item instanceof CustomFeedModel) {
-            return <CustomFeed item={item} showSaveBtn showLikes />
+            return (
+              <CustomFeed item={item} showSaveBtn showLikes showDescription />
+            )
           }
           // if section is posts or posts & replies
         } else {