Jenkins testing fixes

Jenkinsfile

@@ -12,9 +12,6 @@ pipeline {
         TAG = "${env.BRANCH_NAME}"
     }
     stages {
-        environment {
-            FIREFOX_BIN = "firefox/firefox-bin"
-        }
         stage('Checkout') {
             steps {
                 script {
@@ -59,12 +56,9 @@ pipeline {
             }
         }
         stage('Test') {
-            // apt-get update
-            // apt-get install libgtk-3-0 libdbus-glib-1-2 xvfb
-            // wget https://ftp.mozilla.org/pub/firefox/releases/64.0.2/linux-x86_64/en-US/firefox-64.0.2.tar.bz2
-            // tar xvjf firefox-64.0.2.tar.bz2
-            // rm firefox-64.0.2.tar.bz2
-
+            environment {
+                FIREFOX_BIN = "firefox/firefox-bin"
+            }
             steps {
                 withEnv(['NODE_ENV=']) {
                     sh "karma start"