Fix migration failing when user has no projects

See merge request !8589

- Fixed typo
- Fixed migration when there are no projects and path is nil
- Added path rollback that was missing if there was a SQL error

Fix a API deprecation warning

See merge request !8587

Expire related caches after changing HEAD

See merge request !8584

Add a constraint on the query parameter to allow querying for projects with dots in their name.

See merge request !8210

Move admin groups spinach tests to rspec

See merge request !8313

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

Remove trailing whitespace

Closes #26698

See merge request !8581

fix pagination component handling different header styles from different server proxies

See merge request !8569

Allow to use '+' symbol in filenames

Closes #22859

See merge request !6644

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

Use string for class_name option for lazy autoload class

See merge request !8580

existing folders and existing repos should not use the same set of instructions …

See merge request !3446

use plain shell

See merge request !3509

Passing constant into this option is deprecated in Rails 5.2
https://github.com/rails/rails/commit/8312a0d22212798864f142b5a94805e0baa6c562

Mutate the attribute instead of issuing a write operation to the DB in `ProjectFeaturesCompatibility` concern.

Closes gitlab-ee#1520

See merge request !8552

Merge branch '25018-gitlab-checks-changeaccess-looks-for-user-permissions-that-don-t-exist' into 'master'

Resolve "`Gitlab::Checks::ChangeAccess` looks for user permissions that don't exist"

Closes #25018

See merge request !8551

Resolve "Metrics middleware:  endpoint is nil"

Closes #26587

See merge request !8544

Resolve "Sort order for pipeline build lists doesn't properly handle numbers"

Closes #25428

See merge request !8277

Improve single mattermost team select disabled state

See merge request !8276

Merge separate build spec files into one in correct location

Closes #24579

See merge request !8564

Add tests

Update commit entity to point to valid commit page

Closes #26624

See merge request !8558

Fix broken link in docs

Closes #26544

[ci skip]

See merge request !8529

Allow to use ENV variables in redis config

See merge request !8073

Fixed spacing of labels in issuable row on milestone#show

See merge request !8563