Admin interface: add ORDER FORM

Add an admin interface so that a complete new order can be generated by a team admin on behalf of an agent.

o They should not need to "login" or mimic the agents account as per the current workflow

o The admin interface needs to be extremely streamlined, ideally all one scrollable page.

o minimize need to expand sections

o overrides should be possible in all places including calendar conflicts, pricing, being able to schedule events in the past etc.

o This interface needs to be done with an eye for admin efficiency, and should not be a simple copy of the current editing page which has too many roll out sections.