Added picker
Re-added methods to get width and height of the renderer
Style and eqeq fixes
Merge remote-tracking branch 'origin/bug4_implement_picking' into next

* origin/bug4_implement_picking:
  Style and eqeq fixes
  Re-added methods to get width and height of the renderer
  Added picker

Conflicts:
	web/lib/vgl/picker.js
	web/lib/vgl/renderer.js