Tests are now working most of the time

Exception is MissionSchedulingControllerTests and once in a while
problems with TestMissionEventHandler. All of these are due to
background processes not shutting down correctly or in time.

backend/api.test/Controllers/AreaControllerTests.cs

@@ -73,7 +73,7 @@ public async Task TestCreateAreaEndpoint()
         Assert.Equal(query.AreaName, area!.Name);
     }
 
-    [Fact(Skip = "Reason")]
+    [Fact]
     public async Task CheckThatMissionDefinitionIsCreatedInAreaWhenSchedulingACustomMissionRun()
     {
         // Arrange