Showcase building job before passed jobs on the stage overview

Continue to build centos 6 image for this release, will be removed in…

… next release

Changed database upgrade links to the right documentation page #000

Revert "Merge pull request gocd#8177 from kritika-singh3/remove-empty…

…-task-list-validation"

This reverts commit e63a99a, reversing
changes made to a82dee7.

 - this is reverted as the validation makes sense.

Fix git installation on agent centos {6,7} docker images

Toggling back to the old comparison spa for the release

Update `shellwords-ts` to 3.0.0

Fix loading of edit task modal for templates

* @is_config_repo_pipeline variable is not available during templates load,
  default to false when the specified variable is not available.

Using PATCH method instead of PUT for updating agent associations on …

…environment SPA.

Merge pull request gocd#7155 from kritika-singh3/update-pipeline-api-…

…update

Added support for group attribute in update pipeline config api