Fix space issue and add test

Closes #25879

See merge request !8217

big and mini pipeline css changes

See merge request !8224

Mattermost slash auto config

Closes #24769

See merge request !8070

Merge branch '25897-textarea-stops-accepting-space-and-return-characters-with-no-warning' into 'master'

Fix space, return and tab blocks on textareas

Closes #25897

See merge request !8218

Fix error 500 renaming group. Also added specs and changelog.

Closes #17922 and #23223

See merge request !8201

Prevent erasing Milestone filter when updating other filters

Closes #25561

See merge request !8117

Fix copy in Issue Tracker empty state

See merge request !8202

Inject ::UploadedFile from Multipart middleware

Closes #25888

See merge request !8215

Merge branch 'zj-mattermost-slash-config' of gitlab.com:gitlab-org/gitlab-ce into zj-mattermost-slash-config

Adds CSS class to status icon on MR widget to prevent non-colored icon

Closes #25898

See merge request !8219

Setup teaspoon tests for Issuable

Rename groups with .git in the end of the path

Closes #25862

See merge request !8199

Allow projects with dashboard as path

See merge request !8216

I mistakenly concluded Rack::Multipart injects File instances into the
params. These should be UploadedFile instances. This reuses a mock
UploadedFile class we already had in GitLab.

Added support for Authentiq OAuth provider

See merge request !8038

Ensure nil User-Agent doesn't break the CI API

Closes #25895

See merge request !8213

Adds MR id to changelor

added lighter count badge background-color for on white backgrounds

See merge request !7873

Fix Import/Export labels error

Closes #24257

See merge request !8212

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

# Conflicts:
#   app/assets/stylesheets/pages/pipelines.scss

Homogenize revert and cherry-pick button styles generated by commits_helper.rb

Closes #25225

See merge request !8053