Raise node version

.travis.yml

@@ -85,6 +85,7 @@ before_install:
   - "export DISPLAY=:99.0"
   - "/sbin/start-stop-daemon --start -v --pidfile ./tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -ac -screen 0 1920x1080x16"
   - "echo `xdpyinfo -display :99 | grep 'dimensions' | awk '{ print $2 }'`"
+  - nvm install v0.12.9
   - travis_retry npm install
 
   # We need phantomjs 2.0 to get tests passing

frontend/package.json

@@ -56,7 +56,8 @@
     "yaml-loader": "^0.1.0"
   },
   "scripts": {
-    "test": "npm run webpack && npm run karma",
+    "pretest": "npm run webpack",
+    "test": "npm run karma",
     "karma": "./scripts/karma-runner.js",
     "postinstall": "./node_modules/.bin/bower install --config.interactive=false",
     "webpack": "./node_modules/.bin/webpack --colors --progress",