Only send events to clients who need it

- User events (star, rating, plays) only sent to same user
- Don't send to the client (browser window) that originated the event

ui/src/dataProvider/httpClient.js

@@ -1,15 +1,19 @@
 import { fetchUtils } from 'react-admin'
+import { v4 as uuidv4 } from 'uuid'
 import { baseUrl } from '../utils'
 import config from '../config'
 import jwtDecode from 'jwt-decode'
 
 const customAuthorizationHeader = 'X-ND-Authorization'
+const clientUniqueIdHeader = 'X-ND-Client-Unique-Id'
+const clientUniqueId = uuidv4()
 
 const httpClient = (url, options = {}) => {
   url = baseUrl(url)
   if (!options.headers) {
     options.headers = new Headers({ Accept: 'application/json' })
   }
+  options.headers.set(clientUniqueIdHeader, clientUniqueId)
   const token = localStorage.getItem('token')
   if (token) {
     options.headers.set(customAuthorizationHeader, `Bearer ${token}`)