Issue #509: Use default hostname that works more universally.

[geerlingguy]

It looks like *.localhost domains don't work on Windows. Under Chrome and IE, with all the default settings, I would get "CONNECTION_REFUSED".

If I switch to anything without .local in the domain, things just work. So I figure why not use the pattern local.[machine-name].com.

This has two advantages:

1. It works (I've had issues with .local and .localhost in myriad environments—not just Windows).
2. If you have a domain like "www.example.com", with a stage env of "stage.example.com", now your local environment would be "local.example.com". So much simpler to reason about and program around if automating anything (e.g. settings.php, build scripts, etc.) since it's just [environment].example.com.