Merging develop into main

• Review home page and concept index page
• Fix link to library
• Update instructions on how to contribute to documentation
• Ensure destination directory for MR deployments exists
• Set "next steps" order to be the same as in lhs nav
• Remove gitlab CI file which is now defined in a protected space
• Feature/eca set field value

.gitlab-ci.yml

-stages:
-  - build
-  - deploy
-
-Build:
-  stage: build
-  tags:
-    - default
-  script:
-    - export WORKDIR=$(php /usr/local/bin/volume.php | cut -d":" -f 1)/drupal/documentation/eca
-    - echo "WorkDir is ${WORKDIR}"
-    - docker-compose up -d
-    - sleep 20
-    - docker-compose exec -T --workdir=/mkdocs mkdocs mkdocs build
-    - docker-compose down
-  artifacts:
-    name: build
-    when: always
-    paths:
-      - site/
-  only:
-    - main
-    - merge_requests
-
-Deploy:
-  stage: deploy
-  tags:
-    - ansible
-  variables:
-    GIT_STRATEGY: none
-  script:
-    - a -m synchronize -a "src=${PWD}/site/ dest=/var/www/docs/eca delete=yes" --limit=bsdevop1
-  cache: {}
-  only:
-    - main
-
-DeployMR:
-  stage: deploy
-  tags:
-    - ansible
-  variables:
-    GIT_STRATEGY: none
-  script:
-    - a -m synchronize -a "src=${PWD}/site/ dest=/var/www/docs/eca-mr/${CI_MERGE_REQUEST_SOURCE_BRANCH_NAME} delete=yes" --limit=bsdevop1
-  environment:
-    name: review/$CI_COMMIT_REF_SLUG
-    url: https://ecaguide.org/MR/$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME
-    on_stop: CleanupDeployMR
-  cache: {}
-  only:
-    - merge_requests
-
-CleanupDeployMR:
-  stage: deploy
-  tags:
-    - ansible
-  variables:
-    GIT_STRATEGY: none
-  script:
-    - a -m file -a "path=/var/www/docs/eca-mr/${CI_MERGE_REQUEST_SOURCE_BRANCH_NAME} state=absent" --limit=bsdevop1
-  environment:
-    name: review/$CI_COMMIT_REF_SLUG
-    action: stop
-  cache: {}
-  rules:
-    - if: '$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME == "develop"'
-      when: never
-    - if: '$CI_MERGE_REQUEST_ID || $CI_PIPELINE_SOURCE == "pipeline"|| $CI_PIPELINE_SOURCE == "trigger"'
-      allow_failure: true
-      when: manual