Move git calls for `Repository#update_branch` inside Gitlab::Git

Closes gitaly#1250

See merge request gitlab-org/gitlab-ee!6279

Enable "prefer-destructuring": EE-Port of gitlab-ce!19943

See merge request gitlab-org/gitlab-ee!6263

CE upstream - 2018-06-26 13:51 UTC

See merge request gitlab-org/gitlab-ee!6288

replaces jira_dev_panel_gl_setup_1.png with a fresh version

See merge request gitlab-org/gitlab-ee!6285

Specify users need to first upgrade to latest available version in major version series

See merge request gitlab-org/gitlab-ee!6281

Use the branch instead of the tag to install

Closes #48341

See merge request gitlab-org/gitlab-ce!20169

CE upstream - 2018-06-26 09:22 UTC

See merge request gitlab-org/gitlab-ee!6283

Resolve "Removed omniauth provider causing invalid application setting"

Closes #46783

See merge request gitlab-org/gitlab-ce!20129

Poll Geo secondary node readiness API in QA tests

Closes #6514

See merge request gitlab-org/gitlab-ee!6261

i18n: externalize strings from 'app/views/projects/deployments'

See merge request gitlab-org/gitlab-ce!19848

Update pipeline icon in web ide sidebar

Closes #48206

See merge request gitlab-org/gitlab-ce!20058

i18n: externalize strings from 'app/views/admin/labels'

See merge request gitlab-org/gitlab-ce!19926

Rails5 fix arel from in mysql_median_datetime_sql

See merge request gitlab-org/gitlab-ce!20167

Fix refresh cache for open issues count service

Closes #47945

See merge request gitlab-org/gitlab-ce!19904

Improve comment on Rails database password

See merge request gitlab-org/gitlab-ee!6282

Move some EE only codes in models to their EE modules

See merge request gitlab-org/gitlab-ee!6276

CE:  Move some EE only codes in models to their EE modules

See merge request gitlab-org/gitlab-ce!20160

Resolve conflicts in app/views/shared/boards/_show.html.haml and app/views/shared/boards/components/_board.html.haml
Signed-off-by: Rémy Coutable <remy@rymai.me>

Update wrong initial setting transfer in application_settings_controller.rb

See merge request gitlab-org/gitlab-ce!20059

# Conflicts:
#	app/views/shared/boards/_show.html.haml
#	app/views/shared/boards/components/_board.html.haml

[ci skip]

Move some EE only helper methods to EE modules

See merge request gitlab-org/gitlab-ee!6275

Resolve "Fixed vulnerabilities should not be actionable in the report"

Closes #6017

See merge request gitlab-org/gitlab-ee!6169

Css fix for search dropdown overflow issue.

See merge request gitlab-org/gitlab-ce!20011

i18n: externalize strings from 'app/views/shared/boards'

See merge request gitlab-org/gitlab-ce!19934

CE upstream - 2018-06-26 00:21 UTC

Closes #6591, gitaly#944, gitaly#789, gitaly#308, gitaly#879, and gitaly#310

See merge request gitlab-org/gitlab-ee!6280

Add Hiroyuki Sato as a Japanese proofreader

See merge request gitlab-org/gitlab-ce!20134

Set flash error message only for current request when updating project

Closes #43772

See merge request gitlab-org/gitlab-ce!20126

Rails5 fix  expected: ({...}) got: (<ActionController::Parameters {...})

Closes #6606

See merge request gitlab-org/gitlab-ee!6271

Rails5 fix NoMethodError: undefined method `join' for "":String

Closes #6607

See merge request gitlab-org/gitlab-ee!6278

Rails5 fix ArgumentError: wrong number of arguments (given 1, expected 2)

Closes #6608

See merge request gitlab-org/gitlab-ee!6272

Signed-off-by: Rémy Coutable <remy@rymai.me>

Update CONTRIBUTING.md to fix links

See merge request gitlab-org/gitlab-ce!19814