- Removed GladeApp selection handling, only on the project now
	  - Removed "Copy" as a command, copying widgets no longer dirty documents (bug 546873)
	  - Removed GladeApp "active_project" concept, every interaction is associated with
	    a GladeProject
	  - Simplified GladeClipboard, the clipboard now only has a list of widgets and
	    not a "selection", everything is removed from the clipboard when new widgets are
	    added there.
	  - GladePalette now has a "project" property and does not need to be refreshed
	    by an external entity.

	19 files changed, 652 insertions(+), 1135 deletions(-)