Allow SAML to identify external users and set them as such

Related to #4009

Fixes #14577

This allows SAML to retrieve group information form the `SAML Response`
and match that to a setting that will flag all matching users as external.

See merge request !3530

Wiki preview URL converting problem [via Markdown]

Current implementation when rendering the preview, thinks relative links are for project repository files.

We are creating a new preview route that will define correct context data to render for wikis instead.

Fixes #2380, #1184

See merge request !3461

Do not add location badge when creating a group or project

Closes #14952 

![](/uploads/778d0cbccffc717d601a91528ca8eb3c/Screen_Shot_2016-04-05_at_5.34.10_PM.png)

![](/uploads/dbd9eb06b510a6ac091dcf2e3fcb9c88/Screen_Shot_2016-04-05_at_5.34.21_PM.png)

See merge request !3555

Wrap code blocks to next line

Closes #14866 

![Screen_Shot_2016-04-06_at_9.27.06_AM](/uploads/8bed5c17b17c9d15fe34dc7161d31e09/Screen_Shot_2016-04-06_at_9.27.06_AM.png)

See merge request !3573

Fix missing entries in permission matrix [ci skip]

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/14882

See merge request !3580

Unblocks user when active_directory is disabled and it can be found

We implemented a specific block state to handle user blocking that originates from LDAP filtering rules / directory state in !2242. 

That introduced a regression in LDAP authentication when Active Directory support was disabled. You could have a scenario where the user would not be temporarily found (like a filtering rule), that would mark the user as `ldap_blocked`, but will never unblock it automatically when that state changed.

Fixes #14253, #13179, #13259, #13959

See merge request !3550

Search Design fixes

Closes #14800 

- Use colors according to design
- Fix width of search input


![Screen_Shot_2016-04-05_at_11.12.33_AM](/uploads/83681ccd90a1a1542c056fd6dbc974d0/Screen_Shot_2016-04-05_at_11.12.33_AM.png)

![Screen_Shot_2016-04-05_at_11.11.54_AM](/uploads/f7557bea2ae055f3550b89751fd7d371/Screen_Shot_2016-04-05_at_11.11.54_AM.png)

See merge request !3475

Fix header link rendering when containing numbers

This fixes the problem where Markdown such as:

    ### 31st

Would get rendered as a link tag pointing to issue number 31 inside a
header tag.

See gitlab-org/gitlab-ce#14936 for more information.

cc @rspeicher 

See merge request !3568

Fix error that was causing only one group to be returned and corrected specs to use the proper attribute type

Revert "API: Ability to retrieve a single tag"

This reverts commit 7f287c91.

See merge request !3575

Fixed issue with enter key not selecting correct value in dropdown



See merge request !3563

Fixed delete comment button color

![Screen_Shot_2016-04-06_at_09.55.38](/uploads/526c03db67b0fc7dc9876439f4be2b6b/Screen_Shot_2016-04-06_at_09.55.38.png)

See merge request !3562

Update shades of red

Closes #14342 

Before:
![Screen_Shot_2016-04-05_at_12.11.44_PM](/uploads/58cf841fe9527a222bcf70c64f93e2fc/Screen_Shot_2016-04-05_at_12.11.44_PM.png)

Fixed:
![Screen_Shot_2016-04-05_at_12.10.56_PM](/uploads/98358b6a20aaee2ca777eee87075085e/Screen_Shot_2016-04-05_at_12.10.56_PM.png)

See merge request !3549

This reverts commit 7f287c91.

Fix missing filters on status tab when user swithches to another state

closes #14769 

![fixi](/uploads/7733ec714b70b2157104af4b039953c3/fixi.gif)

See merge request !3482

Support for measuring Ruby blocks using GitLab performance monitoring

This adds support for measuring timings of arbitrary Ruby blocks.

Fixes #14710 

See merge request !3515

Expose user location in API

* Closes #14720 

See merge request !3558

Ensure empty recipients are rejected in BuildsEmailService

Fixes #14883.

See merge request !3543

Optimise .gitlab-ci.yml

Not sure who should I assign.



See merge request !3542

Signed-off-by: Rémy Coutable <remy@rymai.me>

Added bottom margin to CLI instructions

The CLI instructions block in the empty project page is missing a margin-bottom style property. I added it, you can review the only line I edited to add this.

This only fixes a UX bug (to me), related to the "Remove project" button that is not correctly padded. Now I believe that part look better :)

I attach screenshots.

### before
![Selezione_009](/uploads/f46b2a26c192a0b1994ff2f037f50e6c/Selezione_009.png)

### after
![Selezione_008](/uploads/33a9451bbe8bfd9abd300f9c6eb4005f/Selezione_008.png)

See merge request !3505

API: Ability to retrieve a single tag

* Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/14330

/cc @dblessing 

See merge request !3567