iCal repeating events
Created by: ekes
Import: Need to handle how date entity repeat gets the events, presently broken.
Export: the row plugin http://cgit.drupalcode.org/date_ical/tree/includes/date_ical_plugin_row_ical_fields.inc isn't going to let us _alter
and skip the repeat items. Thus will have to inherit the row plugin and extending it. Related here is adding fields (STATUS cf #140 (closed) and GEO)