When exporting whole_day/all day events to icalendar, let them end a day
  after at midnight instead on the defined day one second before midnight. This
  behavior is the preferred method of exporting all day events to icalendar.
+- Since more ical related code is upcoming (importer), add ical subpackage and
+  move ical related code in here.
typo
importer stub
avoid dependency on Archetypes
fixes + urlib2 based ics fetching
fix ical_importer to import only VEVENT subcomponents. add IcalendarImportSettingsFormView
allow upload of ics files, more descriptive statusmessage
remove test data
whitespace
ATEvent's factory type is Event
+- Add ical import feature. .ics files can be fetched from the net from other
+  calendar servers or uploaded at @@ical_import_settings.