- Change cluster factory to use default_environment
- Add a constant on cluster to declare default environment
- Change find_cluster_platform_kubernetes to search for a specific
  environment on EE, and ignore environment argument on CE
- Override find_cluster_platform_kubernetes and deployment_platform
  methods
- Remove memoization frmo deployment_platform on EE, otherwise when
  searching for a another platform, once the first one is assigned,
environment parameter is completely ignored

Closes #5347

Execute FDW SystemChecks only in Geo Secondary node

Closes #5266

See merge request gitlab-org/gitlab-ee!4970

Tidy up IDE code

See merge request gitlab-org/gitlab-ee!4951

CE upstream - 2018-03-20 09:27 UTC

See merge request gitlab-org/gitlab-ee!5034

Merge branch '5335-undefined-method-log_transfer_error-for-gitlab-geo-jobartifacttransfer-0x00007fea0ac401e8' into 'master'

Resolve "undefined method `log_transfer_error' for #<Gitlab::Geo::JobArtifactTransfer:0x00007fea0ac401e8>"

See merge request gitlab-org/gitlab-ee!5018

Fix broken `use_file` method

Closes #4827

See merge request gitlab-org/gitlab-ee!4836

Fix LDAP group sync permission override UI

Closes #5301

See merge request gitlab-org/gitlab-ee!5003

# Conflicts:
#	app/helpers/services_helper.rb

[ci skip]

EE port of "Prometheus graphs have no empty state when no data is present"

See merge request gitlab-org/gitlab-ee!5030

Resolve "Prometheus graphs have no empty state when no data is present"

Closes #42558

See merge request gitlab-org/gitlab-ce!17759

Resolve "Search code blob sometimes shows filename and branch"

Closes #44280

See merge request gitlab-org/gitlab-ce!17777

Configurable timeout for external authorization

Closes #4832

See merge request gitlab-org/gitlab-ee!4971

Improve JIRA event descriptions

See merge request gitlab-org/gitlab-ee!5024

Improve JIRA event descriptions

Closes #25542

See merge request gitlab-org/gitlab-ce!17811

Remove `www.` from `twitter_url` helper

See merge request gitlab-org/gitlab-ce!17872

CE upstream - 2018-03-20 06:23 UTC

See merge request gitlab-org/gitlab-ee!5032

Ee move render gfm

See merge request gitlab-org/gitlab-ee!3825

Move render gfm to commons and update imports

See merge request gitlab-org/gitlab-ce!15993

CE upstream - 2018-03-19 21:23 UTC

See merge request gitlab-org/gitlab-ee!5029

Show Ajax requests in performance bar

Closes #43925

See merge request gitlab-org/gitlab-ce!17742

# Conflicts:
#	Gemfile
#	Gemfile.lock
#	app/assets/javascripts/vue_merge_request_widget/dependencies.js
#	doc/user/project/integrations/prometheus.md
#	lib/api/search.rb

[ci skip]

[Rails5] Update active_record_locking initializer

See merge request gitlab-org/gitlab-ce!17824