[MIE-1492] Too many Redis Connections

## Activity Streams creates too many Redis Connections.

Redis service dissconnects clients those who stand for 5 minutes in idle state. Then once the client detect that connection is gon, it tries to recconect and creates a new connection.

#### Changelog

- A new module redisWrapper was added in order to create a section where we could overwrite functionality from redis adpater.

- For each 4 minutes on idle state, the client will send a command queue (for instance "select(1)") what resets the idle timmer at redis service.
Sails makes all modules in the `services` directory globally available. Also, the naming convention for files in this directory is CamelCaps, so please rename the file to `RedisWrapper` and access it directly like `client = RedisWrapper`.