* gladeui/glade-inspector.[ch]: New Inspector implementation.
          - The Inspector no longer records session data. 
          - GtkTreeModel of inspector is now synchronised with project data
            in an incremental fashion, instead of being totally rebuilt on changes.
          
        * gladeui/glade-project-view.[ch]: Removed.
        
        * gladeui/glade-app.[ch]: Remove glade_app_add_project_view(). Inspectors
          are now managed by the frontend.
          
        * src/glade-project-window: A unique GladeInspector is associated with        
          each open project. These inspectors are stored in a GtkNotebook. 

svn path=/trunk/; revision=1370