* src/glade-window.c: Set custom label on the property editor sensitive/insensitive
	  according to whether there is a project loaded or not

	* gladeui/glade-app.c: Unset editor widget and set insensitive when no project is
	  loaded (fixes segfaults from editing widgets that dont exist when project is
	  closed, also looks consistant with the rest of the insensitive UI with no project
	  loaded).


svn path=/trunk/; revision=1507