Citation element and new Reference element

[michael-collins]

Would be really super awesome to enable Citations in the sense of a bibliography. The citation element does part of the job by describing the actual copyright usage license, but really this should be in the scope of APA, MLA, and Chicago. There are generators on the internet already, so this should hopefully not be too hard to build.

A method for adding a citation to the page at the bottom, and then in the content, dropping in a Reference element displayed like this: [1] in the content would be super useful. When you drop it in, a list of existing elements present on the page, OR from a remote page of citations. You could filter through that list, and drop in the reference to the citation.