Requests for comment/Configuration database

Requirements

 * Should work cleanly for one-off installs
 * Should handle Wikimedia-style farms:
 * global configuration
 * configurations shared among project groups
 * configurations specific to a wiki
 * need to be able to fetch config info from other wikis cleanly
 * Varying user permissions; not all settings should be editable by everyone
 * Needs high-level read/write support, so we can abstract backends more easily (CDB,SQL,etc)

Internal interface

 * <- shortcut for most common case