This reverts commit 348d5a1d, reversing
changes made to 93e32156.

[11.9] Revert "Remove HipChat integration from GitLab"

See merge request gitlab-org/gitlab-ce!27257

This reverts commit a5378665.

Resolve "Android template is missing .gitlab-ci.yml"

Closes #59293

See merge request gitlab-org/gitlab-ce!26415

(cherry picked from commit 134df14c)

755b6bbc Add missing .gitlab-ci.yml for Android template
78c35f28 Remove additional extra file
285c05f6 Add missing chmod

fix: changed PDFJS prop to GlobalWorkerOptions

Fixed pdf tests

Added changelog entry

This reverts commit 669d84356771682961ac6c416c3cbdb983ec0cd2

Merge branch '57794-project-template-for-net' of https://gitlab.com/gitlab-org/gitlab-ce into 57794-project-template-for-net

Merge branch '57785-create-project-template-for-netlify' of https://gitlab.com/gitlab-org/gitlab-ce into 57785-create-project-template-for-netlify

Adds templates for the 5 most popular Pages templates to the new project
menu. This does not add unique icons for the templates because that
turned out more complicated than expected, and this feature is valuable
without them.

As of part 5 on feature freeze day, we update the license list

https://gitlab.com/gitlab-org/release/docs/blob/7a3b6468aed8b254a26c202e98d8476ec3d6c046/general/release-candidates.md#step-5-update-the-dependencies-license-list-on-gitlab-ce

As part of step 4 on feature freeze day, we need to update the
templates.

https://gitlab.com/gitlab-org/release/docs/blob/7a3b6468aed8b254a26c202e98d8476ec3d6c046/general/release-candidates.md#step-4-update-the-gitignore-and-dockerfile-templates-on-gitlab-ce

Upgrade Prometheus to 2.4.3 and Alertmanager to 0.15.2

This saves about 128 MB of baseline RAM usage per Unicorn and
Sidekiq process (!).

Linguist wasn't detecting languages anymore from CE/EE since
9ae8b574. However, Linguist::BlobHelper
was still being depended on by BlobLike and others.

This removes the Linguist gem, given it isn't required anymore.
EscapeUtils were pulled in as dependency, but given Banzai depends on
it, it is now added explicitly.

Previously, Linguist was used to detect the best ACE mode. Instead,
we rely on ACE to guess the best mode based on the file extension.

Cleanup code, and refactor tests that still use Rugged. After this, there should
be no Rugged code that access the instance's repositories on non-test
environments. There is still some rugged code for other tasks like the
repository import task, but since it doesn't access any repository storage path
it can stay.

Uses curl instead of wget on install_dependencies, as wget does not
support https through http proxy on alpine:latest