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

Render region codes for locale assets with an `_` instead of a `-`

Closes #39225

See merge request gitlab-org/gitlab-ce!14924

Add lazy option to UserAvatarImage

See merge request gitlab-org/gitlab-ce!14895

Fix resolved discussions not expanding on side by side view

Closes #39209

See merge request gitlab-org/gitlab-ce!14918

Fix Pikaday

Closes #38986

See merge request gitlab-org/gitlab-ce!14881

Migrate Gitlab::Git::Wiki#write_page to Gitaly

Closes gitaly#638

See merge request gitlab-org/gitlab-ce!14870

Replace google login image

Closes #39201

See merge request gitlab-org/gitlab-ce!14919

The locale code is turned into an asset path with an underscore
instead of a dash.

The language codes are transformed by `I18n.locale` into a code with a
dash. But the resources for translating are always stored in a path
using a `_` separating the language and the region code.

Backport all fixes from GitLab 10.1 into master

See merge request gitlab-org/gitlab-ce!14922

Add readme only option as project view

Closes #30140

See merge request gitlab-org/gitlab-ce!14900

Get Project Branch API shows an helpful error message on invalid refname

Closes #37032

See merge request gitlab-org/gitlab-ce!14884

SAML fix when auth hash attributes do not define groups

Closes #38923

See merge request gitlab-org/gitlab-ce!14913

Add short_revision and use total_size

Closes #39203

See merge request gitlab-org/gitlab-ce!14917

When there are no groups defined in the auth hash attributes,
`Gitlab::Saml::AuthHash#groups` should return an empty array, and
`Gitlab::Saml::User#find_user` should not mark the user as external.

Closes gitlab-org/gitlab-ce#38923.

In API v4 when requesting a branch with an invalid refname shows an
helpful error message: 'The branch refname is invalid'.

Improve database yml examples

See merge request gitlab-org/gitlab-ce!10247

Security fixes for 10.1 RC

See merge request gitlab/gitlabhq!2209

host is omitted by default

Refactored multi-file data structure

See merge request gitlab-org/gitlab-ce!14862

Add inline edit button to issue_show app

See merge request gitlab-org/gitlab-ce!14875

Change project deletion message from alert to notice

Closes #26956

See merge request gitlab-org/gitlab-ce!14756

Merge branch '20930-very-first-commit-to-default-branch-didn-t-close-referenced-issue' into 'master'

Fix #20930: automatic closing is not triggered on very first push.

Closes #20930

See merge request gitlab-org/gitlab-ce!11899

Move user avatar specs to folder to mimic javascript directory

Closes #39169

See merge request gitlab-org/gitlab-ce!14901

Improve sprite icon spec

Closes #39199

See merge request gitlab-org/gitlab-ce!14914