Changes to ports.json configuration for Wire

Rather than using the `wireHTTP` property to specify which port Wire should use for HTTP, a `wire` object with an `HTTP` property is now used. A `HTTPS` property has also been added to defaults/prefs/ports.json, although Wire does not yet support HTTPS.
This commit also changes the documentation for the ports.json file to use the sphinxjsondomain extension.

defaults/prefs/ports.json

@@ -1,3 +1,6 @@
 {
-  "wireHTTP": 80
+  "wire": {
+    "HTTP": 80,
+    "HTTPS": 443
+  }
 }

docs/general/ports.rst

@@ -2,11 +2,16 @@
 The ports.json file
 *******************
 
-The ``ports.json`` file, located at ``/prefs/ports.json`` determines which ports Aluminum uses for different features. The acceptable keys and values are listed below. All values must be of type ``Number``.
+The ``ports.json`` file, located at ``/prefs/ports.json`` determines which ports Aluminum uses for different features. The file contains a single ``aluminumPorts`` object, described below.
 
 A default configuration of ``ports.json`` is located at ``/defaults/prefs/ports.json``.
 
-.. describe:: "wireHTTP"
+.. json:object:: aluminumPorts
 
-    | The port to use for Aluminum Wire over HTTP.
-    | **Default:** 80
+   :property wire: Ports for Aluminum Wire
+   :proptype wire: :json:object:`wirePorts`
+
+.. json:object:: wirePorts
+
+   :property Number HTTP: Port to use for Aluminum Wire over HTTP
+   :property Number HTTPS: Port to use for Aluminum Wire over HTTPS

src/wire/main.js

@@ -5,7 +5,7 @@ const os = require('os') // For retrieving operating system information (for err
 const path = require('path') // For manipulating request paths
 const mimeTypes = require('mime-types') // For sending the correct Content-Type HTTP header
 
-const ports = JSON.parse(fs.readFileSync('../../prefs/ports.json', 'utf8'))
+const ports = JSON.parse(fs.readFileSync('../../prefs/ports.json', 'utf8')).wire
 const errorPage = fs.readFileSync('../../defaults/errors/404.html', 'utf8') // Default error page content
 const logo = fs.readFileSync('../../logo.svg', 'utf8')
 
@@ -66,4 +66,4 @@ function serverHandler (req, res) {
 }
 
 const server = http.createServer(serverHandler)
-server.listen(ports.wireHTTP)
+server.listen(ports.HTTP)