Use correct data types when communicating between browser and server

[garretraziel]

There is a problem when server is sending some numbers as real numbers, while other numbers as strings, e. g. when querying "count" of connected people. It looks like this:

count! Object {id: 4, count: 0}
lister.js:11 count! Object {id: 6, count: "0"}

It may be caused by querying some numbers from Redis, while setting others in code. Correct this to be consistent.