Fast-forward merge button

For #337, #338 

- [x] fast-forward merge option in project settings
- [x] fast-forward merge button
- [x] message if ff is not possible
- [x] rebase button if ff is not possible and rebase is enabled
- [x] rebase button depends on ff-only setting
- [x] remove `rebase enabled by default` checkbox from project settings
- [x] implement rebase feature
- [x] write tests
- [x] update CHANGELOG and documentation
- [x] mention in 8.0 blog post

See merge request !485

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

Extend approvals permissions for guests and reporters

https://dev.gitlab.org/gitlab/gitlab-ee/issues/328

See merge request !487

Correct grant_type in example

Fix the capitalisation of the grant_type parameter. If it's in capitals it doesn't work, and it also looks like this is a field that we need to fill in when actually it just needs to be the exact string "authorization_code".

See merge request !22

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 omnibus-gitlab configuration options to the kerberos doc.

Extension of gitlab-org/gitlab-ee!6

See merge request !20

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>

Fix sidebar navigation issue when viewing Group Settings pages

Fix for #3

See merge request !21

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>

CE to EE



See merge request !484

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

Limit content width for big screens except certain pages

- [x] limit content width to 1200px
- [x] align header with head
- [x] set full-width for split diff pages

Fixes #2353
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

See merge request !1207

Improve perofrmance of git blame

https://gitlab.com/gitlab-org/gitlab-ce/issues/2286

Now, it's four times as faster.

See merge request !1209

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

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

Fixed text about HTTP

Fixed for text to be more clear. Because of tweet https://twitter.com/mystygage/status/630798770012323840

See merge request !1921