Bunch of interaction updates for the calendar item control.

Wino.Calendar/Helpers/CalendarXamlHelpers.cs

@@ -0,0 +1,12 @@
+using System.Linq;
+using Wino.Calendar.ViewModels.Data;
+using Wino.Core.Domain.Collections;
+
+namespace Wino.Calendar.Helpers
+{
+    public static class CalendarXamlHelpers
+    {
+        public static CalendarItemViewModel GetFirstAllDayEvent(CalendarEventCollection collection)
+            => (CalendarItemViewModel)collection.AllDayEvents.FirstOrDefault();
+    }
+}