Adding perf testdata for MR diff tab

See merge request gitlab-org/gitlab-ce!26660

Add a service to proxy calls to Prometheus API

See merge request gitlab-org/gitlab-ce!26840

- Also refactor the get and json_api_get methods so that the get method
can be reused by the new proxy method.
- The new proxy method makes no changes to the request to the prometheus
server and response from the prometheus server. This allows it to be
used as a proxy to the Prometheus server, hence the name.

Quarantine failing tests

See merge request gitlab-org/gitlab-ce!27036

Remove EE-specific parts from FilteredSearchManager (CE-backport)

See merge request gitlab-org/gitlab-ce!27016

(cherry picked from commit a4d0b2435ff132da9bb238fea95672a6ddfd084d)

Remove EE-specific parts from FilteredSearchManager

Closes #9976

See merge request gitlab-org/gitlab-ee!10597

Fix IDE file dropdown

Closes #60021

See merge request gitlab-org/gitlab-ce!27015

Fix old image diff swipe view

Closes #56762

See merge request gitlab-org/gitlab-ce!26968

CE Backport: Re-use MR tabs styles to Epic tabs

See merge request gitlab-org/gitlab-ce!26935

Add Roadmap to Epic page

See merge request gitlab-org/gitlab-ee!10488

Roadmap would occupy entire window innerHeight but
when `defaultInnerHeight` prop is set, it can use that instead
of full window height.

IDE fix MR detection from fork

See merge request gitlab-org/gitlab-ce!26986

**Why?**
Currently the IDE loads a merge request based on only the
`source_branch` name. This means it loads MR's from
forks that have the same branch name (not good).

- This required updating the BE API to accept `source_project_id`

Docs: Improve to include using sidekiq-cluster via gitlab.rb

Closes #10187

See merge request gitlab-org/gitlab-ee!9832

- Include doing it via gitlab.rb
- Use full command path to avoid confusion

Show error when namespace/svc account missing

Closes #54506

See merge request gitlab-org/gitlab-ce!26362

Resolve "Update 'speedometer' button on Gitlab.com header to be a dropdown menu that lists dashboards"

Closes #10488

See merge request gitlab-org/gitlab-ee!10519

Fix LDAP Group Sync QA e2e specs

Closes gitlab-org/quality/nightly#89

See merge request gitlab-org/gitlab-ee!10600

Fixing single string values in the 'include:' keyword of gitlab-ci.yml validations

See merge request gitlab-org/gitlab-ce!26998

This fix is a followup to !24098 which introduced a validation of the
`include:` keyword of a gitlab-ci configuration file when triggered
from /ci/lint API calls.

However, there was a test case missing: the case of a single string as
value. I have added a test case for that which shows that the code was
not validating it correctly.

This commit fixes that to allow all `include:` valid inputs.

Fix capitalization of a sentence in CONTRIBUTING.md

See merge request gitlab-org/gitlab-ce!27021

Backport Resizable container component for gl-charts

See merge request gitlab-org/gitlab-ce!26843

* Fix up graph resize logic if navbar is collapsed

Add snapshot

Resize vuln graph

See merge request gitlab-org/gitlab-ee!10028

Clarify the Runner registration and authentication tokens

See merge request gitlab-org/gitlab-ce!26996