FS-8102 #resolve #comment Add auto-provision/config support to VC

Add support for loading config from external json. config.json in the
base path of VC will allow over-ride of arbitrary settings and setting
of arbitrary data in the verto.data data store.

add ability to specify autologin flag in the configs.

add autocall to config.json and make it actually autocall.

additionally refactor the call function so that it will actually call
something.

html5/verto/verto_communicator/Gruntfile.js

@@ -281,6 +281,7 @@ module.exports = function (grunt) {
            src: [
              '*.{ico,png,txt}',
              '*.html',
+             '*.json',
              'partials/**/*.html',
              'images/{,*/}*.{webp}',
              'css/fonts/{,*/}*.*',