Added DateTime test, added filetime functions to Catagories, and removed unused variables.

src/core/config/Categories.js

@@ -192,6 +192,8 @@ const Categories = [
             "Translate DateTime Format",
             "From UNIX Timestamp",
             "To UNIX Timestamp",
+            "From Windows Filetime To UNIX",
+            "To Windows Filetime From UNIX",
             "Extract dates",
         ]
     },