Move tools source files to their own folder

nw/gui/__init__.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from nw.gui.build import GuiBuildNovel
 from nw.gui.doceditor import GuiDocEditor
 from nw.gui.docviewer import GuiDocViewer, GuiDocViewDetails
 from nw.gui.itemdetails import GuiItemDetails
@@ -10,13 +9,10 @@ from nw.gui.outline import GuiOutline
 from nw.gui.outlinedetails import GuiOutlineDetails
 from nw.gui.projdetails import GuiProjectDetails
 from nw.gui.projtree import GuiProjectTree
-from nw.gui.projwizard import GuiProjectWizard
 from nw.gui.statusbar import GuiMainStatus
 from nw.gui.theme import GuiTheme
-from nw.gui.writingstats import GuiWritingStats
 
 __all__ = [
-    "GuiBuildNovel",
     "GuiDocEditor",
     "GuiDocViewDetails",
     "GuiDocViewer",
@@ -28,7 +24,5 @@ __all__ = [
     "GuiOutlineDetails",
     "GuiProjectDetails",
     "GuiProjectTree",
-    "GuiProjectWizard",
     "GuiTheme",
-    "GuiWritingStats",
 ]