Allow OAuth SSL verification to be disabled when importing from GitHub

Close https://gitlab.com/gitlab-org/gitlab-ee/issues/457

The SSL verification should be disabled if the GitHub Enterprise use a self signed certificate. Even disabling this on GitLab, the Git client installed in the server will perform the verification and stop the process if it is unknown. So, we need to disable Git SSL verification in the server hosting `GitLab` with the following command:

```
$ git config --global http.sslVerify false
```

/cc @balameb @ernstvn 

See merge request !323

Reset merge request widget options

Fixes #14986 

See merge request !3582

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>