Create Offer Page/Form

[devinmatte]

Creating a review should be a full page, the page should have a full markdown editor available, and allow the user to see a markdown preview. Allow them to enter pay, stipend, housing, and deadline attached to offer.

Utilizing https://www.npmjs.com/package/react-markdown may be the way to handle this

[mxmeinhold]

Probably the cleanest way to do this is to create a markdown component, like in #35, and then use that for this page.