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

Bump creole to ~> 0.5.0

Closes #2815

See merge request !1890

Bump gon to ~> 6.0.1

Closes #2856

See merge request !1889

Maybe rescue session_expire_delay by setting a default value.

Related to gitlab-org/omnibus-gitlab#956

See merge request !1880

Rescue StandardError, not Exception

See merge request !1893

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

Closes #2822