Include velocity.js library in the asset pipeline, instead of linking from a CDN.

I'm not too confident in the jdelivr CDN. Better to include it in the asset pipeline; the JS compiled for the app will be cached by CloudFlare in production.
Include fastclick.js library in the asset pipeline, instead of linking from a CDN.

The reasons are the same as commit a65bd27de39a7f4c4d41aac8e3a1c38efd31dc52
Added version to enquire.js filename.
Upgraded enquire.js library 2.1.0 -> 2.1.2
Added version number to hopscotch.js filename.
Added version number to within-viewport.js filename.
Added version number to jquery-withinViewport.js filename.
Added version number to ng-infinite-scroll.js filename.
Upgraded ng-infinite-scroll js library version 1.0.0 -> 1.2.0