* pid/lock file for potentially long repair operations
* set() for local lists in case of manually added duplicates?
* always make sure there is at least a NEWS.html stub in web.static?
* is __patch_version__ a valid variable name?
* don't hardcode default URIs; use a default config file instead?
* backups of WUI files (created by --patch-tahoe) create regular files even if source is originally a symlink

* create grid-admin script
	- make patch actions part of this
	- make --make-news action part of this
	- add option to add new introducers through g-u (and check syntax)
	- add statistical action (observe storage node and introducer uptimes)?
