[EE] Epic comment thread

Closes gitlab-ce#42148

See merge request gitlab-org/gitlab-ee!4997

CE upstream - 2018-04-03 12:31 UTC

See merge request gitlab-org/gitlab-ee!5209

Use project path in package-and-qa to fetch script

See merge request gitlab-org/gitlab-ee!5204

Settings page for Per Group SAML

Closes #4513

See merge request gitlab-org/gitlab-ee!4549

# Conflicts:
#	doc/ci/examples/browser_performance.md

[ci skip]

Merge branch '5431-geo-pagesdomainverificationworker-can-start-up-on-secondaries-if-db-is-down' into 'master'

Resolve "Geo: PagesDomainVerificationWorker can start up on secondaries if DB is down"

Closes #5431

See merge request gitlab-org/gitlab-ee!5182

Do not retry package-and-qa manual action on failure

Closes #44882

See merge request gitlab-org/gitlab-ce!18130

`overlay2` is more recent and stable than `overlay`

SamlProvider defaults to enabled, validates fields, can create/update, displays info to user
SamlProvider requires top level group
License and policy checks for SamlProvidersController

CE upstream - 2018-04-02 21:40 UTC

See merge request gitlab-org/gitlab-ee!5203

Geo: Migrate CI artifacts into their own registry table

See merge request gitlab-org/gitlab-ee!4719

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

See merge request gitlab-org/gitlab-ce!17950

Move Sidekiq exporter logs to log/sidekiq_exporter.log

See merge request gitlab-org/gitlab-ce!18127

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

See merge request gitlab-org/gitlab-ee!5194

[Rails5] Isolate `test_after_commit` gem

See merge request gitlab-org/gitlab-ce!18129

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Backport missing object storage worker specs

See merge request gitlab-org/gitlab-ce!18138

Resolve "Downstream pipeline arrow is not the same height or color as the other connectors"

Closes #3572

See merge request gitlab-org/gitlab-ee!5172

Refactor the browser performance testing docs

See merge request gitlab-org/gitlab-ce!18097

Refactor the browser performance testing docs

See merge request gitlab-org/gitlab-ee!5178

# Conflicts:
#	app/views/projects/deploy_keys/_index.html.haml
#	doc/ci/pipelines.md
#	doc/ci/quick_start/README.md
#	doc/ci/yaml/README.md
#	spec/javascripts/boards/mock_data.js
#	spec/javascripts/vue_mr_widget/mock_data.js

[ci skip]

CE upstream - 2018-04-02 14:31 UTC

Closes #2262 and gitlab-ce#2262

See merge request gitlab-org/gitlab-ee!5198

Raise more descriptive errors when URLs are blocked

See merge request gitlab-org/gitlab-ce!18058

Resolve "Clicking confidential and lock icons on sidebar should also activate dropdown"

Closes #40907

See merge request gitlab-org/gitlab-ce!17869