Alex,
Given that MongoDB is NoSQL database, our DB Browser is incapable of displaying any sort of schemata or tables from it. Our scaffolding code is similarly unequipped (based on the capabilities of our DB Browser)
We’ll have to update the tech to handle NoSQL databases as well as the scaffolding code to handle the nuances of these types of databases.
I’ll put this on our fix list for 2015, unfortunately I can provide no workarounds right now.