Handle Vimeo videos in URL resource

This issue should be tested by a developer because some tests requires inspecting the DOM. This issue only needs to be tested in 1 device. Test Vimeo in a 3.7+ site In the app, login in our master site. Open "MM Dev Testing Course > Resource: URL > Embedded URL to Vimeo video".  Check that the video is rendered. Inspect the iframe. Check that its src is master.mm.moodledemo.net/media/player/vimeo/wsplayer.php... Test Vimeo in a 3.5 site In the app, login in our 3.5 site. Open "Curso > Topic 1 > Embedded vimeo video". Check that the video is rendered. Inspect the iframe. Check that its src is player.vimeo.com. Test auto-login In the app, login in our master site. Open "MM Dev Testing Course > Resource: URL > Embedded URL to same site and NOT handled by the app (to test auto-login)". Check that the content is rendered without having to login. Notice 1: if you're using a student or teacher account you will see an error saying that you don't have permissions. Notice 2: This already worked before, but the code was refactored a bit.