Add released_at field to releases API
Add released_at column to releases table
Return releases to the API sorted by released_at

- all commits squashed to make danger review happy

Vue-i18n: autofix for app/assets/javascripts/ide directory

See merge request gitlab-org/gitlab-ce!29967

This new attribute is optional and used when set instead of the default
format `gitlab+deploy-token-#{id}`.

Empty usernames will be saved as null in the database.

Related to https://gitlab.com/gitlab-org/gitlab-ce/issues/50228.

Use title and description fields for issue trackers

Closes #63690

See merge request gitlab-org/gitlab-ce!30096

Includes changes to the Vue container registry component to support
the display of an empty message and error message when invalid
characters are found in the group, project or branch name.

repositories/index.html.haml has been changed to remove the content
and place into Vue component.

- instead of using properties
- backward compatibility has to be kept for now

i18n linting for .vue files under the
app/assets/javascripts/clusters/ directory

i18n linting for .vue files under the
app/assets/javascripts/environments directory

- enabled uninstallation
- give it a specific uninstall message
- ajust specs