Add an optional performance bar to view performance metrics for the current page

Closes #29010

See merge request !11439

Prevent Description Change Notes When Toggling Tasks

Closes #32834

See merge request !12057

Add the ability to perform background migrations

See merge request !11854

Attempts to run RSpec tests twice (1 retry)

See merge request !12066

Ignore commit status name validation on importing

Closes #33490

See merge request !12039

Use :request_store hooks on specs

See merge request !12058

Update gitlab-workhorse to v2.1.1

See merge request !12049

Fix a few translation for zh_TW

See merge request !12043

Generate patch with git diff instead of git format-patch

Closes #33525

See merge request !12060

Use gitaly 0.11.2

See merge request !12092

Doc: Add the need to upgrade to Go 1.8.3 in the 9.1->9.2 documentation as the upgrade fails with Go 1.5 (installed with Gitlab 8.1)

See merge request !12078

Doc: Add the need to upgrade to Go 1.8.3 in the 9.1->9.2 documentation as the upgrade fails with Go 1.5 (installed with Gitlab 8.1)

Fix FIDO U2F for Opera browser (based on !10118)

See merge request !12082

Background migrations can be used to perform long running data
migrations without these blocking a deployment procedure.

See MR https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11854 for
more information.

Always render warnings icon in orange

Closes #33132

See merge request !12061

Fall back to gzip when missing optional zopfli dependency

See merge request !12068

Accept avatar file in project API

Closes #33003

See merge request !11988

Improve Job detail view to make it refreshed in real-time instead of reloading

Closes #31397, #30901, #29948, and #24339

See merge request !11848

Test todos_count_format helper at the correct level to improve speed

See merge request !12075

Disable the Style/PreferredHashMethods cop

See merge request !12065

Changes default text to "Unassigned"

Closes #32802

See merge request !12081

Make sure reCAPTCHA configuration is loaded when spam checks are initiated

Closes #33532

See merge request !12080

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

Only show hover state on links and buttons

Closes #32517

See merge request !12051

Use vue files for navigation tabs and buttons

See merge request !12040

doc: add example of scheduler when

See merge request !12067

By changing this text the css will check for `toggle_text == default_label`. In this case they were not the same.
Now they are and it will show the default label in gray.

Remove unused dead singular assignee code in boards

See merge request !12077