Issue #3267401 by nils.destoop, acbramley, smustgrave: Media library is showing 'is required message' while the user has no access to the field

Issue #2580263 by Berdir, nils.destoop, catch, Cottser, larowlan: Find a way to not run contextual_preprocess() on every template

Issue #3071760 by phenaproxima, vijaycs85, catch, nils.destoop, longwave, alexpott: oEmbed system does not remove query strings from local thumbnail filenames