Add:Start of chromecast plugin & update cors accept header, move sortable to static

client/plugins/chromecast.client.js

@@ -0,0 +1,46 @@
+var initializeCastApi = function () {
+  var context = cast.framework.CastContext.getInstance()
+  context.setOptions({
+    receiverApplicationId: chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID,
+    autoJoinPolicy: chrome.cast.AutoJoinPolicy.ORIGIN_SCOPED
+  });
+
+  context.addEventListener(
+    cast.framework.CastContextEventType.SESSION_STATE_CHANGED,
+    (event) => {
+      console.log('Session state changed event', event)
+
+      switch (event.sessionState) {
+        case cast.framework.SessionState.SESSION_STARTED:
+          console.log('CAST SESSION STARTED')
+
+          // Test: Casting an image
+          // var castSession = cast.framework.CastContext.getInstance().getCurrentSession();
+          // var mediaInfo = new chrome.cast.media.MediaInfo('https://images.unsplash.com/photo-1519331379826-f10be5486c6f', 'image/jpg');
+          // var request = new chrome.cast.media.LoadRequest(mediaInfo);
+          // castSession.loadMedia(request).then(
+          //   function () { console.log('Load succeed'); },
+          //   function (errorCode) { console.log('Error code: ' + errorCode); })
+
+          break;
+        case cast.framework.SessionState.SESSION_RESUMED:
+          console.log('CAST SESSION RESUMED')
+          break;
+        case cast.framework.SessionState.SESSION_ENDED:
+          console.log('CastContext: CastSession disconnected')
+          // Update locally as necessary
+          break;
+      }
+    })
+}
+
+window['__onGCastApiAvailable'] = function (isAvailable) {
+  if (isAvailable) {
+    initializeCastApi()
+  }
+}
+
+var script = document.createElement('script')
+script.type = 'text/javascript'
+script.src = 'https://www.gstatic.com/cv/js/sender/v1/cast_sender.js?loadCastFramework=1'
+document.head.appendChild(script)