New version of Web based creator (#86) and Player (#34)

Thies new release of the web based 360 View Creator brings better quality of JPG encoded images. The Creator is using now the mozilla’s quality JPG encoder: https://github.com/mozilla/mozjpeg.

The positive side-effect of this update is that the Creator can now be used also in Safari and Firefox browsers.

The player’s update was just a few minor code tweaks, connected to Player API and UI buttons preloading.