Mostly adds styles for lists and mediaelement.js instances within widgets.
Adds size classname to image widget so themes can customize their display.
Props Soean, obenland, celloexpressions, ocean90, karmatosed.
Fixes#40745.
git-svn-id: https://develop.svn.wordpress.org/trunk@40839 602fd350-edb4-49c9-b593-d223f7449a82
The last time a new widget was introduced, Vuvuzelas were a thing, Angry Birds started taking over phones, and WordPress stopped shipping with Kubrick. Seven years and 17 releases without new widgets have been enough, time to spice up your sidebar!
Props westonruter, melchoyce, obenland, timmydcrawford, adamsilverstein, gonom9, wonderboymusic, Fab1en, DrewAPicture, sirbrillig, joen, matias, samikeijonen, afercia, celloexpressions, designsimply, michelleweber, ranh, kjellr, karmatosed.
Fixes#32417, #39993, #39994, #39995.
git-svn-id: https://develop.svn.wordpress.org/trunk@40640 602fd350-edb4-49c9-b593-d223f7449a82
