Ghost port number as a variable (#102)

* Allow setting ghost port number on install

The port was always set to 80 even if protocol is set to https. Added the setting to ask for port number.

* trailing comma typo

public/v2/apps/ghost.json

@@ -13,7 +13,7 @@
                "GHOST_HOST":"$$cap_ghost_host",
                "GHOST_PASSWORD":"$$cap_ghost_password",
                "GHOST_PROTOCOL":"$$cap_ghost_protocol",
-               "GHOST_PORT_NUMBER": "80",
+               "GHOST_PORT_NUMBER": "$$cap_ghost_port",
                "MARIADB_HOST":"srv-captain--$$cap_appname-db",
                "MARIADB_PORT_NUMBER":"3306",
                "SMTP_FROM_ADDRESS":"$$cap_ghost_smtp_from",
@@ -112,6 +112,12 @@
          "label":"Ghost Protocol",
          "validRegex":"/^([^\\s^\\/])+$/"
       },
+      {
+         "defaultValue":"80",
+         "description":"Port that you will be using",
+         "id":"$$cap_ghost_port",
+         "label":"Ghost Port"
+      },
       {
          "defaultValue":"GMail",
          "description":"Ghost uses node mailer, check this docs https://docs.ghost.org/concepts/config/#mail",
@@ -148,4 +154,4 @@
          "label":"STMP from address"
       }
    ]
-}
+}