Don't allow user to attempt server creation when insufficient quota to launch any flavor
Here I don't have enough quota available to launch anything at all, but I can still click the "Create" button (which tries some flavor, I don't know which) and gets a 403 back from the API. Instead it should tell me something to the effect of "sorry, quota exhausted, ask your cloud administrator for more, or maybe go delete some stuff".
Edited by Chris Martin