Drop references to CDNJS

CDNJS isn't updating correctly and maintenance of that mirror's config
is nearly impossible.

Also adds a reference to jsDelivr in the README, matching what's in
the demo app.

Closes #2343

Change-Id: I3a337ccd55ebc4c193ab205a7f8c8a77c33a4b4b

README.md

@@ -168,8 +168,8 @@ attributes.
 
  * [development roadmap](roadmap.md)
  * [hosted demo](http://shaka-player-demo.appspot.com) (sources in `demo/`)
- * [hosted builds on cdnjs](https://cdnjs.com/libraries/shaka-player)
  * [hosted builds on Google Hosted Libraries](https://developers.google.com/speed/libraries/#shaka-player)
+ * [hosted builds on jsDelivr](https://www.jsdelivr.com/package/npm/shaka-player)
  * [announcement list](https://groups.google.com/forum/#!forum/shaka-player-users)
      ([join](docs/announcement-list-join-group.png) for release and survey
       announcements)

demo/common/message_ids.js

@@ -63,7 +63,6 @@ shakaDemo.MessageIds = {
   CDN_HEADER: 'DEMO_CDN_HEADER',
   LIBRARIES: 'DEMO_LIBRARIES',
   JSDELIVR: 'DEMO_JSDELIVR',
-  CDNJS: 'DEMO_CDNJS',
   DEMO_MODE_HEADER: 'DEMO_DEMO_MODE_HEADER',
   COMPILED_RELEASE: 'DEMO_COMPILED_RELEASE',
   COMPILED_DEBUG: 'DEMO_COMPILED_DEBUG',

demo/index.html

@@ -147,7 +147,6 @@ <h1 class="mdl-mega-footer__heading" localized-string="CDN_HEADER"></h1>
               <ul class="mdl-mega-footer__link-list">
                 <li><a rel="noopener" target="_blank" href="https://developers.google.com/speed/libraries/#shaka-player" localized-string="LIBRARIES"></a></li>
                 <li><a rel="noopener" target="_blank" href="https://www.jsdelivr.com/package/npm/shaka-player" localized-string="JSDELIVR"></a></li>
-                <li><a rel="noopener" target="_blank" href="https://cdnjs.com/libraries/shaka-player" localized-string="CDNJS"></a></li>
               </ul>
             </div>
             <div class="mdl-mega-footer__drop-down-section">

demo/locales/en.json

@@ -54,7 +54,6 @@
   "DEMO_CDN_HEADER": "CDN",
   "DEMO_LIBRARIES": "Google Hosted Libraries",
   "DEMO_JSDELIVR": "jsDelivr",
-  "DEMO_CDNJS": "CDNJS",
   "DEMO_DEMO_MODE_HEADER": "DEMO MODE",
   "DEMO_COMPILED_RELEASE": "Compiled (Release)",
   "DEMO_COMPILED_DEBUG": "Compiled (Debug)",

demo/locales/source.json

@@ -219,10 +219,6 @@
     "message": "[PROPER_NAME:jsDelivr]",
     "description": "A link in the footer, to Shaka Player in the jsDelivr CDN."
   },
-  "DEMO_CDNJS": {
-    "message": "[PROPER_NAME:CDNJS]",
-    "description": "A link in the footer, to Shaka Player in the CDNJS CDN."
-  },
   "DEMO_DEMO_MODE_HEADER": {
     "message": "DEMO MODE",
     "description": "A header for a section of the footer, that allows the user to switch between different modes."