Revert "Allow notifications to sit over the nav bar"
Match labels with element ids.

Refs #4578
- Match label "for" attributes with ids from the inputs they're
  labeling.
- Remove extra promise generation from ghost header and footer helpers.
Strip footnotes from excerpts

fixes #4572

- Remove both inline and bottom footnotes from excerpt output before stripping the remaining HTML
- No more red errors, black text or bold links in codemirror, as codemirror gets confused by footnote syntax. This is a step towards the new editor which has no syntax highlighting in the editor
Upgrading Casper to 1.1.3
Merge pull request #4581 from TryGhost/revert-4544-notification-over-nav

Revert "Allow notifications to sit over the nav bar"
Merge pull request #4582 from jaswilli/ci-adjust

Match labels with element ids.
Merge pull request #4580 from ErisDS/footnote-excerpt

Strip footnotes from excerpts
Merge branch 'master' of https://github.com/TryGhost/Ghost

Conflicts:
	content/themes/casper