This change appends the theme version number to the URL of screenshots that appear in various place of the WordPress Admin. As a result, browsers will be able to refresh the screenshot as needed when the theme is updated.
Props codente, desrosj, audrasjb, SergeyBiryukov.
Fixes#53370.
Built from https://develop.svn.wordpress.org/trunk@52947
git-svn-id: http://core.svn.wordpress.org/trunk@52536 1a063a9b-81f0-0310-95a4-ce76da25c4cd