* app/color_area.[ch]: fill dummy gimage->base_type as well

* app/gdisplay_color.[ch]: add attach_clone, configure, and configure_cancel
functions.

* app/gdisplay.[ch]: remove notify hacks, don't need them anymore. Add cd_ui
field for cdisplay ui.

* app/commands.c: make display filter dialog per display instead of global

* libgimp/color_display.h: ok/cancel notification callbacks

* modules/cdisplay_gamma.c
* app/gdisplay_color_ui.[ch]: changes for above, enabled configuration dialog
and color_area dummy handling

* app/color_balance.c
* app/paint_funcs.c: #include "libgimp/gimpcolorspace.h"

* plug-ins/webbrowser/web-browser.scm: updated urls

-Yosh