Localization of time/date with FullCalendar's language files

[laander]

This enables support for time/date localization through FullCalendar/Moment's language files.

Here's an example (from /examples/language.htm):

<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript" src="//cdn.timekit.io/booking-js/v1/booking.min.js"></script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/fullcalendar/2.4.0/lang/de.js"></script>
<div id="bookingjs">
  <script type="text/javascript">
    TimekitBooking().init({
      name: 'Doc German',
      email: 'marty.mcfly@timekit.io',
      apiToken: 'XT1JO879JF1qUXXzmETD5ucgxaDwsFsd',
      calendar: '22f86f0c-ee80-470c-95e8-dadd9d05edd2',
      fullCalendar: {
        lang: 'de' // Specify the FullCalendar language shortname
      },
      localization: {
        timeDateFormat: false // Necessary to ignore the time/date preset
      }
    });
  </script>
</div>

It's a requirement that the language file is loaded after booking.js but before initialization. Individual settings can still be passed to FullCalendar and have precedence over the language settings.

Text strings on the booking page are not currently translatable, still researching for a proper implementation (perhaps extend the FullCalendar/Moment format?)

[laander]

Fixes #15

[vistik]

🎱