* src/Makefile.am, src/glade-close-button.[ch]: Using Paolo Borelli's close button code for notebook
	  tab close buttons.

	* src/glade-window.c:
	  - Added option to disable toolbar in View menu and session data (bug 586194).
	  - Added option to show notebook tabs for open projects also in the View menu and session data.

	* gladeui/glade-palette.c: Made "both" mode use text horizontally again, still get alot of unwanted
	  ellipsize here.

	* gladeui/glade-project.c: Added the targets-changed signal to refresh views with data about
	  target project versions (notebook tabs).