Version 2.2.0 set up in all components and CI & Code Cleanup

Author: diego-guerrero

.travis.yml

@@ -14,14 +14,13 @@ jobs:
               - chmod +x mvnw
           script:
               - "./mvnw clean package -B -q"
-# Uncomment when release is ready
-#          after_script:
-#              - cd ..
-#              - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
-#              - docker build -t vscode4teaching/vscode4teaching:2.2.0-beta .
-#              - docker build -t vscode4teaching/vscode4teaching:latest .
-#              - docker push vscode4teaching/vscode4teaching:2.2.0-beta
-#              - docker push vscode4teaching/vscode4teaching:latest
+         after_script:
+             - cd ..
+             - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
+             - docker build -t vscode4teaching/vscode4teaching:2.2.0 .
+             - docker build -t vscode4teaching/vscode4teaching:latest .
+             - docker push vscode4teaching/vscode4teaching:2.2.0
+             - docker push vscode4teaching/vscode4teaching:latest
         - name: V4T Extension (Node.js)
           language: node_js
           os: