Make getting a user by the username case insensitive

Closes #27229 and #38304

See merge request gitlab-org/gitlab-ce!21728

Fixes broken borders in reports section MR widget

Closes #51386

See merge request gitlab-org/gitlab-ce!22416

[ci skip] Update Gitaly installation documentation

See merge request gitlab-org/gitlab-ce!22435

Strip whitespace around GitHub personal access tokens

Closes #46588

See merge request gitlab-org/gitlab-ce!22432

Document the role of the maintainer

Closes #52114

See merge request gitlab-org/gitlab-ce!22232

Resolve "Broken master: jasmine/new-line-before-expect in eslint"

Closes #52838

See merge request gitlab-org/gitlab-ce!22436

Prettify all the karma specs

See merge request gitlab-org/gitlab-ce!22412

# Conflicts:
#   spec/javascripts/clusters/components/application_row_spec.js

Merge branch '7493-configuring-prometheus-alerts-causes-cluster-install-page-to-display-error-message' into 'master'

Backport: Resolve "Configuring Prometheus alerts causes Cluster Install page to display error message"

See merge request gitlab-org/gitlab-ce!22408

[ci skip] Fix documentation of Gitlab::Git::Diff#filter_diff_options flags

See merge request gitlab-org/gitlab-ce!22434

Backport from EE: Fix color of text in resolution checkbox

See merge request gitlab-org/gitlab-ce!22429

Now the rake task takes the path to the default storage directory.

Some browsers insert a trailing whitespace after pasting the
token into the field. This should help reduce confusion.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/46588

First iteration to allow creating QA resources using the API

See merge request gitlab-org/gitlab-ce!21302

This fixes the application row component weird state when an
`updating` status is fetched, this causes apps to show as uninstalled
even though they are installed in the cluster.

Harden the wiki against missing last_versions

Closes #52527

See merge request gitlab-org/gitlab-ce!22377

Remove prometheus configuration help text

Closes #52782

See merge request gitlab-org/gitlab-ce!22413

Use cached readme blobs where appropriate

Closes #49591

See merge request gitlab-org/gitlab-ce!22325

Fixed bug with the content disposition with wiki attachments

See merge request gitlab-org/gitlab-ce!22220

Round P/S labels up, not down

See merge request gitlab-org/gitlab-ce!22424

GitLab keeps a cache of the rendered HTML for a repository's README as
stored in the HEAD branch. However, it was not used in all
circumstances. In particular, the new blob viewer framework bypassed
this cache entirely.

This MR ensures a ::ReadmeBlob is returned instead of a ::Blob when
asking a repository for an individual blob, if the commit and path
match the readme for HEAD. This makes the cached HTML available to
consumers, including the blob viewer.

The ReadmeBlob is a simple delegator to the Blob, so should be
compatible in all cases. Adding the rendered_markdown method is the
only additional behaviour it contains.

add link to concurrent devops

See merge request gitlab-org/gitlab-ce!22071

Remove gitlab-grit as a transitive dependency of GitLab

Closes #44361

See merge request gitlab-org/gitlab-ce!22373

Currently, we assume a "last_version" always exists for a wiki page.
In production, this is not always true. So, guard uses of it with a
null check.

Extend Create New Merge Request test to also add a label

Closes gitlab-qa#233

See merge request gitlab-org/gitlab-ce!19228