Updated Mura's bean factory to allow useage of ColdSpring remote beans.

I found that the version of ColdSpring that's included with Mura (and probably all versions) silently uses an "&" prepended to a bean name when creating remote bean proxies (RemoteFactoryBean).  Since Mura now uses its own extension of the ColdSpring Bean Factory and doesn't follow the exact same logic attempting to access remote bean proxies resulted in an error saying the bean factory wasn't loaded.  

I added a check for "&" at the beginning of a bean name.  If that exists it routes the getBean call to the default bean factory.