Updates slices controller_mixin to allow mixing into controller types that may not be web controllers. eg mailers
Updates slices controller_mixin to allow mixing into controller types that may not be web controllers. eg mailers

wycats/merb,merb/merb,wycats/merb,merb/merb,wycats/merb,wycats/merb,merb/merb,wycats/merb