[maven-release-plugin] prepare release CalendarPortlet-2.1.0
[maven-release-plugin] prepare release CalendarPortlet-2.1.0

manhattancollege/up-calendar-portlet,Jasig/CalendarPortlet,Jasig/CalendarPortlet,bjagg/CalendarPortlet,bjagg/CalendarPortlet,manhattancollege/up-calendar-portlet