Extract language_from_git_attributes as a concern so it can
ben included in two blob classes.

This is to DRY the repeated file size check.

Move spec and constants to Highlight

This replaces the repository param.
This allows more flexiblity as sometimes we have highlight content
not related to repository. Sometimes we know ahead of time the language
of the content. Lastly language determination seems better fit as a
logic in the Blob class.
`repository` param is only used to determine the language, which seems
to be the responsiblity of Blob.

Force FoundBlob to use BlobPresenter

Ported from Highlight class since it as a concept is more related to
blob, and this allows more flexibility.

seed_helper changed because testing requires attributes file in repo,
but repo was not a real git repo but instead faked.

Fix problem with spec that showed up in EE merge

See merge request gitlab-org/gitlab-ce!22675

docs: Add deprecation notice for renamed licensed feature

See merge request gitlab-org/gitlab-ce!22575

Added a note about machine types

See merge request gitlab-org/gitlab-ce!22572

Update gitlab-ui to 1.9.0

See merge request gitlab-org/gitlab-ce!22632

Remove mousetrap-rails gem

Closes #53270

See merge request gitlab-org/gitlab-ce!22647

Make new merge request URL more friendly when pushing code

Closes #53012

See merge request gitlab-org/gitlab-ce!22526

Add e2e test to push using a private token

See merge request gitlab-org/gitlab-ce!22628

Update moment to 2.22.2

Closes #53273

See merge request gitlab-org/gitlab-ce!22648

Update GitLab Pages to v1.3.0

See merge request gitlab-org/gitlab-ce!22666

Replace deprecated uniq on a Relation with distinct

See merge request gitlab-org/gitlab-ce!22625

Rename 'sast_container' licensed feature

See merge request gitlab-org/gitlab-ce!22662

Upgrade whitequark/parser to 2.5.3.0

See merge request gitlab-org/gitlab-ce!22652

Delete job_spec.js

See merge request gitlab-org/gitlab-ce!22664

Tests pushing over HTTP(S) using a personal access token

Truncate milestone title on collapsed sidebar

See merge request gitlab-org/gitlab-ce!22624

[11.4] Fix Token lookup for Git over HTTP and registry authentication

See merge request gitlab/gitlabhq!2577

Fix broken "Show whitespace changes" button on MR "Changes" tab

Closes #52122

See merge request gitlab-org/gitlab-ce!22539

[master] Escape issue title while template rendering to prevent XSS

See merge request gitlab/gitlabhq!2556

[master] Redact unsubscribe links in issuable texts

See merge request gitlab/gitlabhq!2528

[master] Resolve "Sensitive information is stored in browser history"

See merge request gitlab/gitlabhq!2555

[master] Validate Wiki attachments are valid temporary files

See merge request gitlab/gitlabhq!2568

[master] JUnit test reports endpoint exposes full stack trace in production mode

See merge request gitlab/gitlabhq!2559

[master] Persist only SHA digest of PersonalAccessToken#token

See merge request gitlab/gitlabhq!2498

[master] Fix XSS in MR source branch name

See merge request gitlab/gitlabhq!2544

[master] Prevent SSRF attacks in HipChat integration

See merge request gitlab/gitlabhq!2530