Fixed bugs in Shape.Utils.triangulateShape

Fixed issues in the triangulateShape method (a for..in loop was used where a sequential for loop is required). 
A for..in loop should be avoided when using array like objects, because it also enumerates inherited properties and iteration order is not guaranteed.
fixes #3773
Update Animation.html
Merge branch 'dev' of https://github.com/gero3/three.js into dev
Merge branch 'patch-1' of https://github.com/gero3/three.js into dev
r67dev
Updated builds.
Added max( value, 0.0 ) to schlick computation. Should fix #4366 and #4454.
Updated builds.
Merge branch 'master' of https://github.com/vandixhoorn/three.js into dev
Fixed global hl and minor clean up.
Updated builds.
Fix some issues with THREE.Animation