Expose single merge request within a project GraphQL query

See merge request gitlab-org/gitlab-ce!19853

This allows the user to get a single MR nested in a GraphQL project
query.

Since we need the full path and the iid anyway, this makes more sense
than having a root query that needs the full path as well.

Update .gitignore with ignoring package-lock.json

See merge request gitlab-org/gitlab-ce!19890

Fix "[Rails5] '-1' is not a valid data_store"

Closes #47369

See merge request gitlab-org/gitlab-ce!19882

IDE sends last commit ID when committing changes

Closes #46192

See merge request gitlab-org/gitlab-ce!19552

Removes unused imports and prettifies code

See merge request gitlab-org/gitlab-ce!19888

[CE backport] Backport InternalRedirect#sanitize_redirect

See merge request gitlab-org/gitlab-ce!19795

Closes #46192

Resolve "Make the html attribute on the blob json call optional"

Closes #46668

See merge request gitlab-org/gitlab-ce!19479

Fix flakey time-sensitive remove deploy key spec

See merge request gitlab-org/gitlab-ce!19800

Fix indentation for 'Current status' section

See merge request gitlab-org/gitlab-ce!19884

Remove line regarding future feature of assigning ancestor group milestones

See merge request gitlab-org/gitlab-ce!19865

Fix flakey time-sensitive user/assignee autocomplete dropdown

See merge request gitlab-org/gitlab-ce!19799

Update process to create new design artifact issue

See merge request gitlab-org/gitlab-ce!19465

Remove scrollbar in Safari in repo settings page

Closes #47410

See merge request gitlab-org/gitlab-ce!19809

Fix missing dots from the CI job log output

Closes #47817

See merge request gitlab-org/gitlab-ce!19871

Closes #47410.

Fix use template buttons for creating a new project

Closes #47580

See merge request gitlab-org/gitlab-ce!19654

Resolve ""Click to expand" link in collapsed diffs should be blue"

Closes #47938

See merge request gitlab-org/gitlab-ce!19867

Resolve "User tabs doesn't show spinner"

Closes #47905

See merge request gitlab-org/gitlab-ce!19862

Resolve "Project homepage > Clone dropdown/input larger than other buttons"

Closes #46699

See merge request gitlab-org/gitlab-ce!19726

Resolve "Placeholder note renders the user name in a new line"

Closes #47850

See merge request gitlab-org/gitlab-ce!19791