The link to the job page was not set properly,
with this commit it links to the correct job page.

Untangle Markdown/Diffs/Notes CSS mess

See merge request gitlab-org/gitlab-ce!26493

Before, the styling for `img:not(.emoji)`` was repeated between
`.md:not(.use-csslab):not(.wiki)` (for comments and the Markdown
preview), `.documentation.wiki` (for help pages), and
`.issuable-details .description .wiki` (for MR and issue descriptions).

In these places, we now simply use `.md`. Wherever we use `.md` but
don't want this image styling (like wikis and blobs), `.md-file` is
added.

Update job detail view sidebar to accommodate post-merge pipelines

See merge request gitlab-org/gitlab-ce!25777

Update pipeline list view to accommodate post-merge request pipelines

See merge request gitlab-org/gitlab-ce!25690

Create project-specific Kubernetes resources just-in-time

See merge request gitlab-org/gitlab-ce!25586

This commit updates the pipeline page  and related components to include
new pipeline information added by the post-merge pipeline feature.

This commit updates the job detail view sidebar to accommodate new
states introduced as part of the post-merge pipeline feature.

Introduces the concept of Prerequisites for a CI build.
If a build has unmet prerequisites it will go through the
:preparing state before being made available to a runner.

There are no actual prerequisites yet, so current
behaviour is unchanged.