SmokeVision: Review coding style
Issue #61

* SmokeVision/J3DI.js
* SmokeVision/J3DIMath.js
* SmokeVision/fieldutil.js
* SmokeVision/fluid.html
* SmokeVision/gl-matrix.js
* SmokeVision/scalarfield.js
* SmokeVision/vectorfield.js
* SmokeVision/webclfluid.js
* SmokeVision/webgl-utils.js