Share dialog

[eyeseast]

This is probably a modal that can be opened in the viewer or search view.

[allanlasser]

As a part of making pages easy to share, we should also make sure they have well-formed head tags for social.

Sharable routes:

• documents/<id>
• projects/<id>

Am I missing any obvious ones to start with?

Is creating embeds the same thing as sharing?

[eyeseast]

I think there's two ways to share:

• embed a document, project, page, note
• share a link to one of those

We can generate embed codes via our oembed endpoint: https://api.www.documentcloud.org/api/oembed/?url=https://www.documentcloud.org/documents/282753-lefler-thesis.html (or we can just construct iframes directly)