Added timeline scrollTop action, added to status_list_container, scrollable_list

(previously removed, adding back now)

app/javascript/gabsocial/actions/timelines.js

@@ -7,6 +7,7 @@ export const TIMELINE_DELETE  = 'TIMELINE_DELETE';
 export const TIMELINE_CLEAR   = 'TIMELINE_CLEAR';
 export const TIMELINE_UPDATE_QUEUE = 'TIMELINE_UPDATE_QUEUE';
 export const TIMELINE_DEQUEUE = 'TIMELINE_DEQUEUE';
+export const TIMELINE_SCROLL_TOP = 'TIMELINE_SCROLL_TOP';
 
 export const TIMELINE_EXPAND_REQUEST = 'TIMELINE_EXPAND_REQUEST';
 export const TIMELINE_EXPAND_SUCCESS = 'TIMELINE_EXPAND_SUCCESS';
@@ -210,3 +211,11 @@ export function disconnectTimeline(timeline) {
     timeline,
   };
 };
+
+export function scrollTopTimeline(timeline, top) {
+  return {
+    type: TIMELINE_SCROLL_TOP,
+    timeline,
+    top,
+  };
+};