Fixes error on first boot after adding an admin.
Fixes error on first boot after adding an admin.

hash_admin_passwords() was being called after registering a config callback
which caused couch_server to die when first booting. Just placed the first call
before registering the callback. Thanks Bob Dionne.



git-svn-id: cddd53339f8fd45d5e26e8b408ccee250f6290a7@797055 13f79535-47bb-0310-9956-ffa450edef68

benoitc/couchdb-old,benoitc/couchdb-old,benoitc/couchdb-old,benoitc/couchdb-old,benoitc/couchdb-old