[Enhancement] Doc Prop/Store Refactor

[ekfuhrmann]

In #22 we introduced a new way of labeling specific items as doc items, enforcing full screen viewport and disabling the ability to resize the iframe. This is done through passing props down through numerous components. It seems like it would make more sense to add this to the Store, but we're a bit unclear on a good way of handling that.

The refactor should look at the following comments for context:

• Various Bug Fixes and Feature Additions #22 (comment)

• Various Bug Fixes and Feature Additions #22 (comment)