Move PffPagodaBundle stuff into OpenSkedgeBundle. 

Add support for CSRF secret token overriding by the environment.

Signed-off-by: Max Fierke <max@maxfierke.com>
Update Pagoda Box README with more disclaimers and the added OPENSKEDGE_SECRET env var.

Signed-off-by: Max Fierke <max@maxfierke.com>