Adding debug config option

+ Defaults to true in non-prod
+ Toggles jade 'pretty' setting currently

One side effect by setting it for the server jade compilation is that it used to be `false`, but now is `true` by default.  This change is reflected in the update to the existing jade compilation test, as *pretty* formatted templates start with a line break, so I had to account for that.  Felt a little dirty/fragile.