Changed prio to enum

ScrumTaskboard/TaskContext.cs

@@ -43,7 +43,7 @@ namespace ScrumTaskboard
         public int id { get; set; }
         public string title { get; set; }
         public string content { get; set; }
-        public int priority { get; set; }
+        public ScrumPrio priority { get; set; }
         public int status { get; set; }
         public int category { get; set; }
         public int createdby { get; set; }