More parser work: fixed a few bugs with [[intlinks]] in headers, a bug that caused the paragraph parser to return an empty string, and added a warning/backup-and-restore for when a render stage returns an empty string.
Javascript lib: UX: When whiteOutReportSuccess() is called on a whiteout over a miniPrompt, the miniPrompt and whiteout are now flown out together. Also, a bit of improvement to message box DOM object destruction code; this fixes problems with message boxes appearing below the shade when ajax auth is done 3 or more times in one page load.