Moves the interface to edit shepherds and sheperd writeups out of the
wgtracker interface and into the doc views (via idrfc).
Added a little to the simple authorization code (can_edit_) in idrfc.
Added a way to reset the writeup to the current templates (leaving
extension points to take templates for non-ietf stream documents).
Fixes bug #967.
Implementation notes:
Currently reused EmailsField -- in the long
run a better approach will be to build a similar PersonField.
This also fixes tickets #834 and #691 (which were effectively duplicates
of #967)
- Legacy-Id: 5631
Note: SVN reference [5570] has been migrated to Git commit 3bc9e9a7add65bf135d669381cb5d93c5a2e3e19
becd10a81d