Use configurable port instead of forcing 8080

[Pupix]

As of now the client only works on port 8080, which is already taken most of the time, as in my case. I have a RethinkDB service running there all the time.

Would be nice to make the client use either a configurable port via params or a less commonly used port in the 65xxx.

[Deudly]

Using a port which is never used is other way to solve this. Example: 9673