Move application form into the /reveal endpoint

[jace]

When a logged in user views a jobpost, an ApplicationForm is instantiated and included in the page behind a reveal button ("Show information") in case they want to apply.

Instantiating ApplicationForm makes a REST call to Lastuser to retrieve the user's email addresses, to ensure this information is never stale.

However, most users do not continue to the reveal button and so their freshly retrieved email address is never used.

The call to Lastuser is one of the most time-consuming parts of rendering a jobpost page. It should be part of the data returned by the reveal endpoint and not loaded in the main render.