Make the TemplateNotFound error read better. Slight refactor of _get_layout.
Make the TemplateNotFound error read better. Slight refactor of _get_layout.

wycats/merb,wycats/merb,benburkert/merb-core,merb/merb,wycats/merb,wycats/merb,merb/merb,benburkert/merb-core,merb/merb,wycats/merb