Arch: add missing translate function

The code was moved to a separate module, `ArchWindowPresets.py`,
in 4f203f8757, but the `translate` function was not imported
in this new module.

src/Mod/Arch/ArchWindowPresets.py

@@ -20,7 +20,10 @@
 #***************************************************************************
 
 import FreeCAD
+
 from FreeCAD import Vector
+from draftutils.translate import translate
+
 
 WindowPresets =  ["Fixed", "Open 1-pane", "Open 2-pane", "Sash 2-pane",
                   "Sliding 2-pane", "Simple door", "Glass door", "Sliding 4-pane"]