Fix bugs with fetching events

aleksis/core/frontend/components/calendar/CalendarOverview.vue

@@ -335,6 +335,7 @@ export default {
             });
             return {
               calendar: {
+                ...previousResult.calendar,
                 calendarFeeds: previousCalendarFeeds,
               },
             };

aleksis/core/schema/calendar.py

@@ -50,7 +50,7 @@ class CalendarEventType(ObjectType):
         return root.get("STATUS", "")
 
     def resolve_meta(root, info, **kwargs):
-        return root.get("X-META", {})
+        return root.get("X-META", "{}")
 
 
 class CalendarFeedType(ObjectType):