* Make moz-message-bar reusable component available to New Tab page * Replace custom implementation with reusable moz-message-bar component * Remove all unnecessary CSS styling of custom implementation * Use new Fluent IDs that adhere to the structure of moz-message-bar usage * Consolidate Thumbs up and Thumbs down logic into same component to avoid duplicating code unnecessarily Differential Revision: https://phabricator.services.mozilla.com/D232106