Allow shared reusable embeddable "blocks" across documents

We currently have a contacts page that contains all contact info for users. When we want to refer to someone's contact info, we link to the contacts page. Users really want to put contact info directly in the page, instead of always linking to the contacts page. But the obvious disadvantage of doing that is that once someone's contact info updates, all instances of their contact info must be updated across the entire Outline instance. We'd like to have a page within the Outline settings area where we can create reusable shared blocks of data. Example block: Imagine it was embedded as so: > Thank you for your interest. The Vice President's contact information is as follows: > > [_Vice President's Contact Info_] > > If you have any questions, please contact the Vice President as soon as possible. To the end user, it would look like this: > Thank you for your interest. The Vice President's contact informatio…