restructure pipeline

.gitlab-ci.yml

@@ -9,15 +9,15 @@ test-frontend:
   script:
     # Configure browser
     - apt-get update -yqqq
-    #- apt-get install -yqq xvfb
-    #- apt-get install iceweasel -yqq
+    - apt-get install -yqq xvfb
+    - apt-get install iceweasel -yqq
     - apt-get install dbus-x11 -yqq
     - Xvfb :99 -screen 0 1280x720x24 -ac &
     - export DISPLAY=:99
     - export $(dbus-launch)
 
     # Install dependencies
-    #- npm install
+    - npm install
     - npm install -g testcafe
     - testcafe --list-browsers