The number of things in the form for submitting a request from the dashboard is growing a little unwieldy. I think we should start a few things like request headers, basic auth, etc, in a collapsed state. If applicable, default values should still be populated and used when sending requests; I just don't want to have to see these extra fields if I'm not using them.
Relates to #259: Make better use of space in inline dashboard docs
Relates to #259 #281
Resolves #259 - Collapse most of the dashboard request form by defaul…
…t & allow expanding as needed