Update SystemNotifications to support a configurable "ghost limit" to prevent showing too many ghosts at a time.
Various updates here with the biggest being support for temporary files between the time a file is uploaded (ajax) and the page is saved, per issue #689. I was planning on implement this as part of the drafts system, but as I work on that, it's turned out that the drafts system needs this feature too, so it's been added. Another addition here is that Inputfields and Fieldtypes can now specify what configuration properties they want to expose to field/template context configuration. I'll document that more in a blog post at processwire.com.