Pita/ueberDB — pull request #37 by cebe (2013-03-05 12:19:34+00:00)
Title: added limited support for findKeys for redis

this solution only supports the usage of findKeys
currently implemented in etherpad-lite PadManager

redis does not support getting a list of available keys by applying
filters like it is needed for findKeys so we track added and deleted
keys.