Revert "Replaced nanobar.min.js local file with CDN version."

This reverts commit 846c7da4b0d517efdaca3ef2d11ccc94b4f5255a.

Removed velocity.js, as it turned out to have worse performance than jquery transit.
Reverted slideVisibleBinder.js.
slideViewBinder.js now uses jquery.transit for its animation.