wxGUI major code reorganization (minor fixes)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49376 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/modules/extensions.py

@@ -31,6 +31,7 @@ from core             import globalvar
 from core.gcmd        import GError, RunCommand
 from gui_core.forms   import GUI
 from gui_core.widgets import ItemTree
+from gui_core.ghelp   import SearchModuleWindow
 
 class InstallExtensionWindow(wx.Frame):
     def __init__(self, parent, id = wx.ID_ANY,