Make focusNode animation work when installing via NPM

[jonnor]

Right now works when installing via Bower, thanks to using custom fixed versions from @djdeath

The mixin we use is badly maintained. It also relies on a badly maintained easing library Ease.

• Latest react.animate upstream git is not available on NPM
• The react.animate version that is on NPM is broken, throws ReferenceError
• When installing react.animate upstream (which has the fixes from djdeath) via bower, component-ease dependency fails to install

The easing functions actually come from tween.js, which is well maintained and available everywhere.