bump to 0.4.0

bower.json

 {
   "name": "gz3d-hbp",
   "description": "3D rendering component of gzweb, modified for HBP",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "private": true,
   "repository": {
     "url": "git+ssh://bbpcode.epfl.ch/neurorobotics/gzweb",

gz3d/utils/package.json

 {
   "name": "gzweb-dev",
   "description": "gzweb build environment setup",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "repository" :
   {
     "type" : "git",