message: Adds npm prune to travis yml to remove not anymore required packages to keep the travis cache clean
diff: @@ -43,10 +43,12 @@ install:
  # install api and return back to root for following steps
  - cd api
  - npm install
  + - npm prune # remove not (anymore) in package.json required packages (to keep the cache clean)
  - cd ..
  # install frontend and return back to root for following steps
  - cd app/webFrontend
  - npm install
  + - npm prune # remove not (anymore) in package.json required packages (to keep the cache clean)
  - cd ../..
  script:
  