New features to GammaGallery

[dtila]

Hi guys,

While the library itself it is very good, I've added a few new features to it on my branch that I needed:

• Be able to view the full image (in order to make zoom) when you click on the image (configurable)
• Add a FULL IMAGE button in the right side which redirect to the high resolution image available (configurable)
• Swap the close with the playback button, and move the close button to the right side.

If you want you can merge these in the mail branch.

Thanks,
Daniel