Fix subtoolbars height - SL #4019

Remove the vertical padding from the box that contain the toolbar, and
change the order of drawings in the container widget so that the
outline looks right.  This has been tested with screenshots, see the
gif animation attached to the ticket.

Signed-off-by: Manuel Quiñones <manuq@laptop.org>
Acked-by: Simon Schampijer <simon@laptop.org>

src/sugar3/graphics/toolbarbox.py

@@ -272,6 +272,8 @@ class _Box(Gtk.EventBox):
         self._toolbar_button = toolbar_button
 
     def do_draw(self, cr):
+        self.get_child().do_draw(self, cr)
+
         button_alloc = self._toolbar_button.get_allocation()
 
         cr.set_line_width(style.FOCUS_LINE_WIDTH * 2)
@@ -282,12 +284,9 @@ class _Box(Gtk.EventBox):
         cr.line_to(self.get_allocation().width, 0)
         cr.stroke()
 
-        self.get_child().do_draw(self, cr)
-
 
 def _setup_page(page_widget, color, hpad):
-    vpad = style.FOCUS_LINE_WIDTH
-    page_widget.get_child().set_padding(vpad, vpad, hpad, hpad)
+    page_widget.get_child().set_padding(0, 0, hpad, hpad)
 
     page = _get_embedded_page(page_widget)
     page.modify_bg(Gtk.StateType.NORMAL, color)