Autoplay next recommended video (#2137)

* Start working on autoplay of next video

* Ignore changes made by gitpod

* Apply changes from PR#1370

* Correct the spelling of recommendations

* Fix linting errors

* Move boolean check to existing onEnded handler

* Pick a random video until the recommendations are improved

* Add simple tests for autoPlayNextVideo

* Fix lint

...again

.gitignore

@@ -37,6 +37,8 @@
 /scripts/i18n/generate-iso639-target.ts
 
 # Other
+/dump.rdb
+/.theia/
 /profiling/
 /*.zip
 /*.tar.xz