2006-04-28  Steve Frécinaux  <steve@istique.net>

	* gedit/gedit-plugin-manager.c: new layout for the plugin manager:
	hide the treeview headers and add a title. Add a context menu to the
	plugin list.

	* gedit/gedit-plugins-engine.c
	(gedit_plugin_engine_get_plugin_icon_name): fallback to default icon
	when the specified icon is invalid or unavailable.

	* gedit/gedit-utils.[ch] (gedit_utils_menu_position_under_tree_view):
	new helper function allowing to position a popup menu under the active
	row of a tree view.