Make tapping the main toolbar scroll to the top of the timeline. #1899 (#2045)

app/src/main/java/com/keylesspalace/tusky/MainActivity.kt

@@ -578,6 +578,9 @@ class MainActivity : BottomSheetActivity(), ActionButtonActivity, HasAndroidInje
 
         val activeTabPosition = if (selectNotificationTab) notificationTabPosition else 0
         mainToolbar.title = tabs[activeTabPosition].title(this@MainActivity)
+        mainToolbar.setOnClickListener {
+            (adapter.getFragment(activeTabLayout.selectedTabPosition) as? ReselectableFragment)?.onReselect()
+        }
 
     }