Upgrade VideoJS to 7.7.6, 2.6.1, 2.2.1 and 5.4.2

General test Restore course backup file attached. (Note: You might need to increase the max upload file size on the site/server) Make sure videojs is enabled and on the first place, youtube, flash support, RTMP streams are checked. View the restored course on different browsers (including mobile) make sure you can play all videos/audios. In "html5 embed" you should be able to show captions and jump to chapters.  (The media links added within a label should be embedded and able to be played in the course page, while to test media links added within other resources or activities you will need to access the activity).  Change interface language to one of  this list   make sure the video player buttons are also translated (enough to check in one browser). Notes: 3gp format is not supported. If your browser does not have flash installed, flv will also not work. Make sure that you test in at least one browser with flash enabled. Vimeo is played by a different player and not supported by videojs (vimeo plugin in videojs was glitchy)