Merge pull request #13 from rayburgemeestre/autotrack

Autotrack
Merge pull request #14 from rayburgemeestre/autotrack

Autotrack
Merge pull request #16 from rayburgemeestre/autotrack

The same fixes from master -> autotrack merge
Merge pull request #18 from rayburgemeestre/autotrack

Autotrack
Merge pull request #20 from rayburgemeestre/autotrack

Autotrack
Provide a very lame IE11 fix in resetImagePosition
Merge branch 'master' of github.com:rayburgemeestre/PhotoSwipe into autotrack