Update CHANGES.txt
Changed static calendar Type ...

... to the relative type it should be. All types added in portal_calendar.
Fix: Added getEventTypes

Added getEventTypes to fix the template bug. You was just able to show Event types in calendars, not all types of portal_calendar.
Bugfix for Calendar Types

Fix the template from static to types of portal_calendar.
Merge pull request #28 from dr460neye/2.3.x

2.3.x calendar and event portlet fix