Redmine

Hi there,

this is a small patch, which should provide the possibility to configure the OpenIdAuthentication.store.

This throws many warnings and spams the log-file on each start.
Message:

OpenIdAuthentication.store is nil. Using in-memory store.

There is also a discussion about this here: http://www.redmine.org/boards/1/topics/35523?r=37706#message-37706

1. Added a new initializer which initialize the Store with a environment setting, if this isn't preserved, he loads a default value.
2. Added two demo configurations to the environments production and development

Best regards,
Daniel