Using Mustache as template engine (now that it does not have a compile method)

The examples given in #331 no longer work because mustache has removed compile method. (Refer: https://github.com/janl/mustache.js/issues/346)

The browser now reports:

Uncaught TypeError: Object ... has no method 'compile' 

[kzap]

templates.suggestion now takes a function (context) { return result; } use the ff for mustache or other template engines:

templates: {
    empty: [
      '<div class="empty-message">',
      'unable to find any affiliate or member',
      '</div>'
    ].join('\n'),
    suggestion: function (context) {
        return Mustache.render('<p><strong>{{username}}</strong> – &lt;{{email_address}}&gt;</p>', context);
    }
}

[antonioaltamura]

very thanks @kzap