Fix for IE11 browser bug #5

[hmoraes]

I made several changes to the code. The main ones are:

• Remove JQuery dependency. This greatly reduces the final size of the script
  • Only the function outerWidth() was used from JQuery, but the diference between width() and outerWidth() in the spotlight was very small. Then outerWidth() was changed to width()
• Changed the form of the creation of the plugin to use template
  • The tags for spotligth, backdrop and backdropCarousel are added by the template
• Fix the problem 'Symbol' not defined in IE 11
• Rewrite the initialization to work in IE11
  • Loads the thumbnails using Image() object instead of adding in the tag _$imageCache
  • Search for _$spotligth, _$backdrop and _$backdropCarousel before use rather than maintaining the reference
  • Always call _render() (renamed to _createElements) and _init() on MEDIACONTROL_RENDERED event
• Build the release version with ~8KB

[tjenkinson]

@hmoraes thanks this is great and it's a lot better not having to bring in jQuery. I've added a few comments.

Will merge in a few hours and make a few small tweaks and release a new version.

Thanks!

[tjenkinson]

@hmoraes it's all updated now. The size has gone up a little bit again because I'm including Zepto in the file as Clappr currently doesn't officially export it. I'm going to submit a PR to clappr that does this, and once that's done if merged this will be able to use that and the file size will go down again.

[hmoraes]

It was good to help rsrsrs

[tjenkinson]

Actually clappr already exports zepto so it's back to a nice 8kB again now :)