removed unnecessary files, renamed docker containers

Author: pesektomas

.travis.yml

@@ -15,9 +15,9 @@ install:
   - docker-compose up -d webserver php-fpm
   - docker-compose exec php-fpm composer install --no-interaction
   - docker-compose exec php-fpm Tests/app/bin/console assets:install -v Tests/app
-  - docker-compose exec -w /application/Tests/app php-fpm npm ci
+  - docker-compose exec -w /application/Tests/app php-fpm npm i
   - docker-compose exec -w /application/Tests/app php-fpm npm run build
-  - docker-compose exec php-fpm npm ci
+  - docker-compose exec php-fpm npm i
 
 script:
   - docker-compose exec php-fpm npm run test