Use new phantomjs source

Version 1.9 was removed from upstream [Debian repos](http://ftp.de.debian.org/debian/pool/main/p/phantomjs/) so I [used fpm](https://gitlab.com/axil/phantomjs-debian) to build our own Debian packages.

Fixes #3722

See merge request !1924

https://gitlab.com/axil/phantomjs-debian

* Version 1.9 was removed from upstream Debian repos

Remove reverence to satellites

Remove reference in backup docs

See merge request !1923

Update public access documentation



See merge request !1837

Nginx workhorse upload limit

See merge request !1919

[ci skip]

It turns out that if we do not the declaration from
"location /" wins.

Add support for HiDPI displays in gravatar service

Decouple Markdown previews from DropzoneInput



See merge request !1908

Remove enumerize gem

Closes #2803 

See merge request !1912

Bump asana to ~> 0.4.0

Closes #2830

See merge request !1911

Bump doorkeeper to ~> 2.2.0

Closes #2746

See merge request !1910

Remove duplicate CHANGELOG entry shipped in 8.1.4



See merge request !1914

Enable the Lint/RescueException cop



See merge request !1894

Closes #2830

Closes #2746

Improve group and project members pages

* Improve UI for group members page
* Improve UI for project members page

For internal issue https://dev.gitlab.org/gitlab/gitlabhq/issues/2057

This MR should solve usability problem with adding new member to group/project 

See merge request !1886

Bump gitlab-shell to 2.6.8
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

For gitlab/gitlabhq#2635

See merge request !1939

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

Added total query time to Sherlock

This makes it easier to see if a problem is caused by slow queries or
slow Ruby code (unrelated to any SQL queries that might be used).

See merge request !1887

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

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

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

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

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

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

Add reference to Microsoft's Git Credential Manager for Windows.

Minor update to the LFS-documentation, referencing Microsoft's Git Credential Manager for Windows.

See merge request !1892

Bump colorize to ~> 0.7.0

Also removes `colored` which came in during the CI merge and is
redundant.

Closes #2822

See merge request !1895

Bump rack-oauth2 to ~> 1.2.1

Closes #2748

See merge request !1891