Collector EiEvent Family refactoring against WIP 5 of the schemas

The following JIRA is related to our sub-group's (Jerry, Rish, Bruce, Ed) latest version of our refactoring. All the files we have been modifying are included in an uploaded zip file entitled:

ei-schemas-wip5-ed-Apr-05.zip

Also included in the zip is a note that describes our changes since the release of the wip 5 set of schema files. With respect to the EIEvent class I think we are nearly finished. We still need to derive and restrict the WS-calendar stuff to generate the type of schedules we care about using in the EIEvent, but once we get over that hurdle we should be able to generate example XML instances of all the OpenADR 1.0 DR signals in current use today to verify that we can support the existing DR programs that use OpenADR 1.0.