Ensure empty string & non-numeric values also result in an error.

The ApplicationSetting#restricted_visibility_levels= now takes care of
converting string formatted levels to integers.

EE already includes specs for the ApplicationSettingsController, so
ensure future changes will be easier to merge to EE.

Port of '23674-simplify-milestone-summary' to EE

See merge request !1511

Fix custom protected branch pattern jumping scroll position to top -- EE merge edition

Closes gitlab-ce#30149

See merge request !1523

[ci skip]

[ci skip]

Port of scrollable-secondary-tabs to EE

See merge request !1534

As per GitLab 9.0 LFS is supported in GEO

See merge request !1530

Include JavaScript test coverage in coverage badge

See merge request !1501

Port of "API: Make the /notes endpoint work with noteable iid instead of id" to EE

Closes #1875

See merge request !1518

Merge branch '1961-number-of-required-approvals-must-not-be-reset-when-changing-assignee' into 'master'

Resolve "Number of required approvals MUST NOT be reset when changing assignee"

Closes #1961

See merge request !1515

CE Upstream - Monday

Closes gitlab-ce#29897

See merge request !1517

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/30149

Use more semantic `<button>` element and prevent the form from
submitting.

Conflicts:
	app/assets/javascripts/protected_branches/protected_branch_dropdown.js
	app/assets/stylesheets/framework/dropdowns.scss
	app/assets/stylesheets/pages/projects.scss

[ci skip]

[ci skip]

Don't reset the approval count set on an MR when it's higher than the
project default, and we're not passing an `approvals_before_merge`
param.

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

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

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

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

Use `:empty_project` where possible in service specs

See merge request !10274

Update wikis_controller.rb to use strong params

Closes #23363

See merge request !10240

If wget fails, remove the empty file created

See merge request !10257

Adds entry about kebab case props in documentation

Closes #29973

See merge request !10208

Fix sub-nav highlighting for `Environments` and `Jobs` pages

Closes #30112

See merge request !10254

Spread out webpack bundles per-line to reduce conflicts in EE

See merge request !10269