caldav: Store times at server's timezone, not utc.

The values stored from caldav should be at the server's timezone, like
all other timestamps of openerp. We accept any timezone in the iCalendar
files, we export our (server's) timezone by default.

bzr revid: p_christ@hol.gr-20100812111031-m14103hzl9q7ff9j

addons/caldav/calendar.py

@@ -233,6 +233,8 @@ class CalDAV(object):
 
         att_data = []
         exdates = []
+        _server_tzinfo = pytz.timezone(tools.get_server_timezone())
+        
         for cal_data in child.getChildren():
             if cal_data.name.lower() == 'organizer':
                 self.ical_set(cal_data.name.lower(),
@@ -264,9 +266,11 @@ class CalDAV(object):
                 continue
             if cal_data.name.lower() in self.__attribute__:
                 if cal_data.params.get('X-VOBJ-ORIGINAL-TZID'):
-                    self.ical_set('vtimezone', cal_data.params.get('X-VOBJ-ORIGINAL-TZID'), 'value')
-                    date_utc = cal_data.value.astimezone(pytz.utc)
-                    self.ical_set(cal_data.name.lower(), date_utc, 'value')
+                    # since we do convert, do we also need to save the original tzid?
+                    # self.ical_set('vtimezone', cal_data.params.get('X-VOBJ-ORIGINAL-TZID'), 'value')
+                    
+                    date_local = cal_data.value.astimezone(_server_tzinfo)
+                    self.ical_set(cal_data.name.lower(), date_local, 'value')
                     continue
                 self.ical_set(cal_data.name.lower(), cal_data.value, 'value')
         vals = map_data(cr, uid, self, context=context)