Switch from pizza.moe to RedisQ for killmail stream

[mentos1386]

RedisQ is used by zKillboard which makes it more reliable.

RedisQ Documentation

Current RedisQ is here

Only thing that needs to be changed is constructor(), it should set this.client to be a readable stream which is streaming kills. Kills should be fetch from RedisQ using http call which makes a request and waits for response. If response contains data (not null), it streams it to stream and creates a call again. This way of getting data is also known as long pooling.