CDI extension needed by CDI Utils MVP-pattern. See https://github.com/tomivirkki/cdiutils/branches/vaadin and https://github.com/tomivirkki/cdiutils-addressbook/branches/vaadin7.
It hooks into CDI lifecycle listener afterBeanDiscovery. Goes through every AbstractPresenter Bean and adds an OberverMethod which provides
1) transporting some own ParameterDTO as event object
2) making a qualifying filter from CDIEventImpl named by the viewInterface ?! 
3) on notifyed with the ParameterDTO calling each targeted AbstractPresenter with viewOpened().