Handling special characters in Issuable Templates

Closes #40028

See merge request gitlab-org/gitlab-ce!15323

Update secret_values to support dynamic elements within parent

See merge request gitlab-org/gitlab-ce!16665

Default to HTTPS for all Gravatar URLs

See merge request gitlab-org/gitlab-ce!16666

Moves status icon into a vue file and adds tests

See merge request gitlab-org/gitlab-ce!16703

* master: (30 commits)
  Resolve "Link to Clusters in Auto DevOps instead of Kubernetes service"
  Update CHANGELOG.md for 10.4.1
  Add a gRPC health check to ensure Gitaly is up
  Add formatted_data attribute to Git::WikiPage
  Avoid array indices to fixtures in JS specs
  Migrate .batch_lfs_pointers to Gitaly
  Updates `Revert this merge request` text
  Work around a bug in DatabaseCleaner when using the deletion strategy on MySQL
  Use the DatabaseCleaner 'deletion' strategy instead of 'truncation'
  Workaround a recaptcha pop-up that cannot be tested
  Moves more mr widget components into vue files Adds i18n Adds better test coverage
  Execute system hooks after-commit when executing project hooks
  Remove one Spinach job and add one RSpec job
  Migrate repository bundling to Gitaly
  Use limit for search count queries
  Fix offense in runners settings QA page object class
  Wait for runner until it registers itself in QA tests
  Fix static-analysis offenses in QA support class
  Add specific views / selectors for QA runners page
  Add views / selectors for pipeline show page object
  ...

If using gravatar.com, both plain_url and ssl_url in settings are now
served via HTTPS. Make this the default.

Moves more mr widget components into vue files

See merge request gitlab-org/gitlab-ce!16677