Move application files to sub-folder

Application/Feeds/Category.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace FeedCenter
+{
+    public partial class Category
+    {
+        public static Category Create()
+        {
+            return new Category { ID = Guid.NewGuid() };
+        }
+
+        public bool IsDefault
+        {
+            get { return Name == "< default >"; }
+        }
+
+        public int SortKey
+        {
+            get { return IsDefault ? 0 : 1; }
+        }
+    }
+}