Use normal associations instead of polymorphic

Closes #26908

See merge request !8769

27352 Update label dropdown titles for bulk edits

Closes #27352

See merge request !8852

Merge branch '27774-text-color-contrast-is-barely-readable-for-pipelines-visualization-graph-page-with-roboto-fonts' into 'master'

Give ci status text on pipeline graph a better font-weight

Closes #27774

See merge request !9033

Fix Ctrl+Click support for Todos and Merge Request page tabs

Closes #24716

See merge request !8898

Merge branch '25487-small-improvements-to-the-ui-of-mattermost-and-slack-command-services' into 'master'

Resolve "Small improvements to the UI of Mattermost and Slack Command services"

Closes #25487

See merge request !8491

Layer dropdowns over right sidebar

Closes #27639

See merge request !9004

Disallow CI’s finished time wrapping

See merge request !8499

Fix broken anchor links when special characters are used

Closes #26778

See merge request !8961

Don't fail the build if there is no coverage files

See merge request !9037

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

Updated specs

Align Segoe UI label text

See merge request !8884

Improved timeago performance

Closes #25728

See merge request !8231

Makes stop button visible in environment page

Closes #24147

See merge request !7379

Refresh authorizations when transferring projects

See merge request !9029

Resolve "spec/features/issues/filtered_search/dropdown_label_spec.rb
takes 10 minutes to run"

Closes #27564

See merge request !8929

We can't properly use foreign keys on columns that are configured for
polymorphic associations which has disadvantages related to data
integrity and storage. Given we only use time tracking for Issues and
Merge Requests we're moving to the usage of regular associations.

Fixed backup.rake colorize method following Pages -> CE

See merge request !9031

Add keyboard shortcut to move to file permalink `y`

Closes #8082

See merge request !8799

Cherry-picked 'Remove colorize methods that weren't in CE.'

Use reCaptcha when an issue identified as spam

Closes #21518

See merge request !8846

Remove deploy key endpoint

Closes #20569

See merge request !8716

Fix MR widget url

Closes #27632

See merge request !8989