Add Custom HTML for User to SamlPostResponse #67
Description
When we use the SamlPostResponse binding to post/redirect the user back to the SP, sometimes the SP can take a while to process that response.
If/when this happens, the user is essentially stuck on a blank screen, as we have already rendered our SamlPostResponse, and the browser is literally just waiting for the SP to respond.
In looking at SamlPostResponse->renderContent(), it looks like it simply renders a blank screen (from the user's perspective).
This is a feature request to allow setting/adding "custom display HTML" so that in this renderContent(), it will also display any custom HTML that we could specify (e.g. adding a spinner icon and <div>Please Wait...</div>, etc.)