Search: Production Db Fixes

www.chronozoom.com's production db already had a user called
'chronozoom' (not the base collections owner) so reworked that user to
be 'czadmin' before renaming the base collection owner to 'chronozoom'.
Also the base collections owners' display name was set to the provider
id so had to rework SQL to ensure that renaming worked correctly for new
installs plus against production db. (Tested on copy.)

IMPORTANT: Also need to change web.config appKey for
DefaultSuperCollection to "ChronoZoom".
Merge branch 'search' into multiple-collections