Rewrite of the grid stuff. Simpler api and cleaner implementation.

Also follow the micro grids in pentagram design.

sugar/canvas/CanvasView.py

@@ -5,7 +5,5 @@ class CanvasView(goocanvas.CanvasView):
 	def __init__(self):
 		goocanvas.CanvasView.__init__(self)
 
-		self.set_size_request(gtk.gdk.screen_width(),
-							  gtk.gdk.screen_height())
 		self.set_bounds(0, 0, 1200, 900)
 		self.set_scale(gtk.gdk.screen_width() / 1200.0)

sugar/canvas/Makefile.am

@@ -2,7 +2,9 @@ sugardir = $(pythondir)/sugar/canvas
 sugar_PYTHON =			\
 	__init__.py		\
 	CanvasView.py		\
+	CanvasBox.py		\
 	Colors.py		\
+	Grid.py			\
 	GridBox.py		\
 	GridLayout.py		\
 	GridModel.py		\