EE: Optimise rendering of Markdown documents that belong to different projects

See merge request gitlab-org/gitlab-ee!5308

Update github.md on GHE URL

See merge request gitlab-org/gitlab-ee!5332

[ci skip]

Ee 41436 use simpler env vars for auto devops replicas

See merge request gitlab-org/gitlab-ee!5143

CE upstream - 2018-04-11 15:29 UTC

See merge request gitlab-org/gitlab-ee!5328

Merge branch '5576-geo-checksum-failures-often-due-to-repository-not-existing-on-disk' into 'master'

Resolve "Geo: Checksum failures often due to repository not existing on disk"

Closes #5576

See merge request gitlab-org/gitlab-ee!5329

Geo: Propagate broadcast messages to secondaries

Closes #4930

See merge request gitlab-org/gitlab-ee!5303

Shorten protected branch / tag access level dropdown text

Closes #5216

See merge request gitlab-org/gitlab-ee!5091

Resolve "Geo: Wiki repository verification is broken"

Closes #5619

See merge request gitlab-org/gitlab-ee!5315

Geo: Minor improvements to Disaster Recovery and Planned Failover docs

Closes #4932

See merge request gitlab-org/gitlab-ee!5284

[Rails5] Update Event#subclass_from_attributes method

See merge request gitlab-org/gitlab-ce!18312

Link Monitor docs to the front page

See merge request gitlab-org/gitlab-ee!5327

Link Monitor docs to the front page

Closes #45006

See merge request gitlab-org/gitlab-ce!18314

CE upstream - 2018-04-11 12:26 UTC

See merge request gitlab-org/gitlab-ee!5326

Resolve "tree/master shows incorrect CI build status"

Closes #44541

See merge request gitlab-org/gitlab-ce!17995

Replace vue resource with axios for pipeline details page

See merge request gitlab-org/gitlab-ce!18285

Issue export CSV includes "Weight" and "Locked"

Closes #2172 and #2287

See merge request gitlab-org/gitlab-ee!5300

Client implementation for InfoAttributes

See merge request gitlab-org/gitlab-ce!18261

Resolve "Illustration for the case where the job has finished and the log was erased"

Closes #45159

See merge request gitlab-org/gitlab-ce!18253

# Conflicts:
#	lib/rspec_flaky/flaky_examples_collection.rb

[ci skip]

Clients can now request the attributes from `$GIT_DIR/info/attributes`
through Gitaly. The Gitaly migration is described in gitlab-org/gitaly#1082.

The parser algorithm was implemented in a way it could handle both file
contents or a File handle, and both were already tested.

Other than that, using the boy scout rule, I've removed a class,
InfoAttributes, as it was delegating everything to the parser and
therefor wasn't really needed in my opinion.

This refactors the Markdown pipeline so it supports the rendering of
multiple documents that may belong to different projects. An example of
where this happens is when displaying the event feed of a group. In this
case we retrieve events for all projects in the group. Previously we
would group events per project and render these chunks separately, but
this would result in many SQL queries being executed. By extending the
Markdown pipeline to support this out of the box we can drastically
reduce the number of SQL queries.

To achieve this we introduce a new object to the pipeline:
Banzai::RenderContext. This object simply wraps two other objects: an
optional Project instance, and an optional User instance. On its own
this wouldn't be very helpful, but a RenderContext can also be used to
associate HTML documents with specific Project instances. This work is
done in Banzai::ObjectRenderer and allows us to reuse as many queries
(and results) as possible.

Resolve "Clean outdated flaky specs from the flaky specs report"

Closes #37721

See merge request gitlab-org/gitlab-ce!18196

[EE] Resolve "Clean outdated flaky specs from the flaky specs report"

See merge request gitlab-org/gitlab-ee!5250

Replace the `project/issues/milestones.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18300