* doc/gladeui-sections.txt: updated.

	* doc/Makefile.am: Ignome glade-devhelp.h

	* src/glade-devhelp.c: Fixed glitch with radio button notebook
	  tab emulator.

	* src/glade-editor-property.c: Fixed invisible check buttons for
	  optional properties

	* src/glade-project-window.c: Moved the devhelp creating code into
	  glade_project_window_create() where it belongs, now devhelp is
	  invisible by default.

	* src/glade-utils.c:
	  glade_util_get_hbuttons --> glade_util_get_devhelp_hbuttons.