Remove stuff.
Remove old ReleaseNotes.
Update webkit docs.
Remove unused PBGitGradientBarView class.
Remove unconnected outlets and code that refers to them.
Remove unreachable code.
Remove unused PBQLOutlineView.
Remove PBQLTextView
Remove uncalled toggleQLPreviewPanel
Remove quick look stuff.
Remove more unused stuff.
Remove more dead code.
Warn about unreachable code.
Remove quartz framework. Not needed anymore because we got rid of the QuickLook stuff.
Remove unused webView outlet.
Remove unused previewPanel ivar.
Remove forward-declarations from pc.h and add them where needed. This is not what a prefix header is for.
Remove empty ivar block from interface.