Have a single variable in the HTML client for the server

[dgarijo]

Now we have the server in 3 different lines of code!
When we need to shift from local tests to production, we need to shift the URLs. Instead it should be one.

[juanjemdIos]

I think this issue is the same as:
#253
In the client, have a server / localhost setting

no?
I solved detecting localhost or production server.

[dgarijo]

It's the same issue, correct. I will close one, sorry

[dgarijo]

Fixed in #253