TemplateDataBlob: Don't add class "sortable" to HTML rendering

Change-Id: I7268a5a4d1cced7eaf74f8c6000144287bce397e
spec: Update 'type' documentation following 2013-04-30 discussion

* Namespace wiki-specific types under "wiki/"
* wiki/user does not have to be an existing user

Change-Id: I3e0dc99fcede999e3ac83a25573bfe00cacef758
Merge "TemplateDataBlob: Don't add class "sortable" to HTML rendering"
Merge "spec: Update 'type' documentation following 2013-04-30 discussion"