Prevent 500 test webhook

Fixes #1803

See merge request !1299

Supporting for multiple omniauth provider for the same user

fixes https://dev.gitlab.org/gitlab/gitlabhq/issues/1721

and https://dev.gitlab.org/gitlab/gitlabhq/issues/1760

See merge request !1296

Write to log if web hook cant be executed. This prevents 500 error when
test web hook with invalid URL and prevent exceptions and retries in
sidekiq
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Improve english wording in UI filters

Fixes #1664

See merge request !1298

Docker version upgrades

See merge request !251

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

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

Update Docker configuration to 7.5.2 + minor improvements

- Update to 7.5.2
- logs are now readable with `docker logs`
- recommend an interactive command line for configuration

See merge request !250

Small UI improvement

Move issue/mr iid in the list to second row.

Because title is more important part when looking at the list of issues. Also different amount numbers in ids make title shifted which is bad from UI perspective

See merge request !1295

Release/monthly: what did we learn

Updating the release documentation based on what we learned from the 7.5 release.

See merge request !1294

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

Add docker to changelog

See merge request !1293

Remove docker file maintainer at his request. https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/245#note_647506

User agnostic docker example

See merge request !245

Show cross project ref

Fixes #1661

See merge request !1292

Reintroduce minimum gitlab system requirement

As per https://dev.gitlab.org/gitlab/gitlabhq/merge_requests/1249#note_29946

See merge request !1286

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

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

Improve issuable form links UX

> The create new label / milestone links should open in a new window / popup to avoid losing information already filled in for a new issue.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/855

See merge request !1291

Improve search ux

When I use search from merge requests page I usually want to see merge requests results. If I do search from wiki pages -> I want to see wiki results first.

With this patch search scope is set to issues if you are on issues controller and same for merge requests and wikis

See merge request !1290

Fix safari ui bug

See merge request !1289