Merge request widget redesign (EE Version)

Closes #2362

See merge request !1711

Fix notes_on_personal_snippets_spec EE

See merge request !1846

Fix sub-second timing comparison error for Devise confirmation period

Closes #2362

See merge request !1843

Fix notes_on_personal_snippets_spec EE

See merge request !1846

Add a CE to EE migration guide for 9.2

See merge request !1845

Fix sub-second timing comparison error for Devise confirmation period

Closes #2362

See merge request !1843

Check for all possible timeago strings that can be rendered in a few minutes. We cannot rely on 'less than a minute ago'