Changed the conversion starter system to an update starter system. Also increased the usability of the update page by adding more information abou t each update that can be done and for which version number this applies.

Use the new optional argument to endRequest in the middleware Currently endRequest is called twice on an exception if Django intercepts the exception and returns it's own result. By setting optional=True we do not crash on 'assert self.in_request'.

Add optional argument to endRequest The optional argument allows endRequest to be called more than once, as long as any invocation after the first has optional=True.

Document value store methods