Merge pull request #7 from surreal8/master

Replacing polymaps file
resize zoomslider if necessary[C
Merge branch 'master' of https://github.com/IMAmuseum/OSCI-Toolkit-Frontend
make sure external links are handled correctly
make sure external links are handled correctly
dont remove spaces in tags
add code to get praragraph number to notes
set the initial zoom correctly
hide the zoom if no vertical space
make sure layers use correct aspect in full-screen mode
sort layers based on how they are in the markup
getting rid of thin lines in images