As part of our efforts to migrate PageTriage to Vue.js, we want to take a piecemeal approach to converting the Curation Toolbar - going one component at a time.

This task covers conversion of the Tag component:

• ./modules/ext.pageTriage.toolbar/tags.js
• ./master/modules/ext.pageTriage.toolbar/tags.less
• ./modules/ext.pageTriage.toolbar/tags.underscore

Acceptance criteria:

• duplicates current behavior, with the possible exception of bug fixes
• as similar as possible to current style as possible
• protected by pagetriage_ui=tags url parameter feature flag
• uses common flyout code T376103
• uses updated toolIcon code T376101