Fix default collation configuration on staging databases
Following a discussion on irc, we installed the staging db without specifying a collation.
This resulted in configuring
en_US.UTF-8 on staging db (or even on the provenance server).
This creates sorting discrepancies down the line .
This should be fixed. The M.O. is to create a db dump, scratch the db, create a new one (with the proper collation), finally restore the dump on new db 
 Top of my head following the discussion, this needs proper documentation source link
Migrated from T3772 (view on Phabricator)