Drop support for postgresql 9.1 in GitLab 9.3

Closes #32851

See merge request !11677

Fixed locale frontend not picking up regions

Closes #32913

See merge request !11717

Remove trigger docs job

See merge request !11574

Return the last coverage in trace stream

Closes #31556

See merge request !11128

Resolve "Audit long-term cacheability of webpack assets"

Closes #32737

See merge request !11622

Clean up diff rendering

See merge request !11390

Resolve "GitLab 9.0 to 9.2 is incompatible with PostgreSQL 9.1"

See merge request !11709

Add small update for the i18n guide.

See merge request !11719

Prevent commits from upstream repositories to be re-processed by forks

Closes #19262

See merge request !11511

Provide default for calculating label text color

Closes #32728

See merge request !11681

Bugfix: Always use the default language when generating emails.

Closes #32748

See merge request !11662

Recompile test env Gitaly when `GITALY_SERVER_VERSION` fails

Closes #32762

See merge request !11664

Fix note header author and time ago wrapping in parallel diff

Closes #32801

See merge request !11702

Autolink package names in more dependency files

See merge request !11226

Fix filtered search issuable empty state exception

Closes #31455

See merge request !11347

Remove 0 margin bottom for last paragraph on note text

See merge request !11699

There was a race condition issue when the application was generating an
email and was using a language that was previously being used in other
request.

Refactor `DynamicPathValidator` and `GitLab::Regex` some more

See merge request !11693

This was caused by a webpack config issue that would only look in folders that only had lower case letters. This has been changed to include any word character

Closes #32913

Fix terminals support for Kubernetes service

Closes #31754

See merge request !11653

Use grpc 1.3.4

See merge request !11645

Implement Web Hooks calls logging

Closes #17848

See merge request !11027

It was broken, because we introduced a default namespace, which was not used by terminal methods.