Arch: import from draftutils instead of DraftTools

These functions were moved from DraftTools and DraftGui
to individual modules precisely to make them easy to import.
Otherwise we have to import the entire DraftTools and DraftGui
modules which creates dependency problems when we want to use
some functions without the graphical interface.

src/Mod/Arch/ArchCommands.py

@@ -27,7 +27,8 @@ from FreeCAD import Vector
 if FreeCAD.GuiUp:
     import FreeCADGui
     from PySide import QtGui,QtCore
-    from DraftTools import translate, utf8_decode
+    from draftutils.translate import translate
+    from draftutils.utils import utf8_decode
 else:
     # \cond
     def translate(ctxt,txt):

src/Mod/Arch/ArchComponent.py

@@ -28,7 +28,7 @@ from FreeCAD import Vector
 if FreeCAD.GuiUp:
     import FreeCADGui
     from PySide import QtGui,QtCore
-    from DraftTools import translate
+    from draftutils.translate import translate
     from PySide.QtCore import QT_TRANSLATE_NOOP
 else:
     # \cond