Lightbox overlay fix

- Overlay now correctly fades out the <footer> as well.
Links in galleries no longer have border on hover
Changed style of <blockquote> and <hr>
Added styling for <sup> and <mark>

Closes #33
Cleaned up rich data & added more styling for quotes

* Cleaned up rich data. Closes #29
* Added style for left/right hanging images and quotes. Closes #31
* Added cite to quotes. Closes #32
Merge pull request #35 from Reedyn/1.2.2-development

Christmas update 🎄