Auto-reconnect to event stream after 20secs timeout

ui/src/actions/serverEvents.js

@@ -0,0 +1,12 @@
+export const EVENT_SCAN_STATUS = 'ACTIVITY_SCAN_STATUS_UPD'
+
+const actionsMap = { scanStatus: EVENT_SCAN_STATUS }
+
+export const processEvent = (data) => {
+  let type = actionsMap[data.name]
+  if (!type) type = 'EVENT_UNKNOWN'
+  return {
+    type,
+    data: data.data,
+  }
+}