[Rails5] Update files by `rails app:update`

See merge request gitlab-org/gitlab-ce!17828

Fix a test that is going to break, that has not broken yet

See merge request gitlab-org/gitlab-ce!17966

Cleanup test for disabling comment submit button

See merge request gitlab-org/gitlab-ce!17930

Merge branch '44564-error-500-while-attempting-to-resolve-conflicts-due-to-utf-8-conversion-error' into 'master'

Resolve "Error 500 while attempting to resolve conflicts due to UTF-8 conversion error"

Closes #44564

See merge request gitlab-org/gitlab-ce!17962

Merge branch '44218-add-internationalization-support-for-the-prometheus-merge-request-widget' into 'master'

Resolve "Add internationalization support for the Prometheus Merge Request widget"

Closes #44218

See merge request gitlab-org/gitlab-ce!17753

When we added caching, this meant that calling `can_be_resolved_in_ui?` didn't
always call `lines`, which meant that we didn't get the benefit of the
side-effect from that, where it forced the conflict data itself to UTF-8.

To fix that, make this explicit by separating the `raw_content` (any encoding)
from the `content` (which is either UTF-8, or an exception is raised).

Resolve "Problem with prettier setting trailingComma: all"

Closes #44589

See merge request gitlab-org/gitlab-ce!17967

Move GitLab.com settings under main docs

See merge request gitlab-org/gitlab-ce!17968

Use gitlab-shell 7.1.1

See merge request gitlab-org/gitlab-ce!17959

Fix EncodingHelper#clean blowing up on UTF-16BE strings

Closes gitaly#1101

See merge request gitlab-org/gitlab-ce!17943

Rollback to a set version instead of an arbitrary number of steps

Closes #40302

See merge request gitlab-org/gitlab-ce!17947

Resolve "Autolinking includes trailing exclamation marks"

Closes #44587

See merge request gitlab-org/gitlab-ce!17965

Add Vue resource interceptor to performance bar

See merge request gitlab-org/gitlab-ce!17915

HTTPS only Pages

Closes #28857

See merge request gitlab-org/gitlab-ce!16273

Bump loofah to 2.2.2 and rails-html-sanitizer to 1.0.4

Closes #44554

See merge request gitlab-org/gitlab-ce!17945

Update the menu information to access "Schedules" page

See merge request gitlab-org/gitlab-ce!17957

Update Prettier Print Width to 100

See merge request gitlab-org/gitlab-ce!17953

Resolve "Limit number of failed logins using LDAP for authentication"

Closes #43525

See merge request gitlab-org/gitlab-ce!17886

Request Chinese Traditional proofreader permissions.

See merge request gitlab-org/gitlab-ce!17762

Show gitaly address instead of disk path

See merge request gitlab-org/gitlab-ce!17954

Fix issuable state indicator

Closes gitlab-ee#4683

See merge request gitlab-org/gitlab-ce!17878

Resolve "Indicate supported image formats in avatar error"

Closes #43771

See merge request gitlab-org/gitlab-ce!17747