* add redis-namespace gem
* namespace redis usage
* refactor redis namespace code to be less intrusive
previously : would be prepended to keys when the
REDIS_NAMESPACE env var was not set
now if it is not set the namespacing functions are
not used at all, which should prevent disruptions
when instances update.
* fix redis namespace variable style in streaming js
* remove trailing space
* final redis namespace style fix
beatrix
Eugen Rochko
Les Orchard
Effy Elden