basic retina support
better retina support
Made close icon larger to better fit both lrt & rtl also fixed arrow position
new non retina sprite
Merge pull request #925 from jameskoster/master

retina support
compress images, sharper non-retina, fix rtl single chosen drop icon on focus
Merge pull request #955 from harvesthq/compress-retina-images

compress images, sharper non-retina, fix rtl single chosen drop icon on ...