Add using "localhost" as a testing server to accommodate a working preview

This is fairly simple stuff randyrie and I’m sure it was an oversight by the developers in the initial development of Pinegrow. Now we have to live with it I suppose.
I can’t recall if Windows PCs have Apache.
Pinegrow is a super product just a shame you can’t map the server to your own localhost or MAMP for that matter.
As I cry like a baby, I thank you for your contribution