* src/glade-utils.[ch]: removed glade_util_str_replace_char(),
	  glade_util_replace() already exists.

	* src/glade-project-window.c: Added clause to save recent files after opening and
	  saving projects and when clearing recent queue (i.e. save it when it changes, not
	  at quit time).
	  also fixed cosmetic bug: changed "Recents" to "Recent" in "Recent projects".

	* src/glade-app.c, src/glade-project-window.c: Dont allow more than one project
	  with the same name to be opened simultainiously (where the project name is
	  the basename of the project_path).