Holiday System (#3122)

Content.IntegrationTests/ContentIntegrationTest.cs

@@ -79,6 +79,9 @@ namespace Content.IntegrationTests
             // Avoid funny race conditions with the database.
             options.CVarOverrides[CCVars.DatabaseSynchronous.Name] = "true";
 
+            // Disable holidays as some of them might mess with the map at round start.
+            options.CVarOverrides[CCVars.HolidaysEnabled.Name] = "false";
+
             // Avoid loading a large map by default for integration tests.
             options.CVarOverrides[CCVars.GameMap.Name] = "Maps/Test/empty.yml";
 

Content.IntegrationTests/Tests/ContainerOcclusionTest.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using System.Threading.Tasks;
 using Content.Server.GameObjects.Components.Items.Storage;