Merge branch '471-timeline-since-id' into 'develop'

#471 - fix timeline fetch with since_id

Closes #471

See merge request pleroma/pleroma-fe!722

src/modules/statuses.js

@@ -123,7 +123,7 @@ const addNewStatuses = (state, { statuses, showImmediately = false, timeline, us
 
   const maxNew = statuses.length > 0 ? maxBy(statuses, 'id').id : 0
   const minNew = statuses.length > 0 ? minBy(statuses, 'id').id : 0
-  const newer = timeline && maxNew > timelineObject.maxId && statuses.length > 0
+  const newer = timeline && (maxNew > timelineObject.maxId || timelineObject.maxId === 0) && statuses.length > 0
   const older = timeline && (minNew < timelineObject.minId || timelineObject.minId === 0) && statuses.length > 0
 
   if (!noIdUpdate && newer) {