Previously this used a regular LIKE which is case-sensitive on
PostgreSQL. This ensures that for both PostgreSQL and MySQL the
searching is case-insensitive similar to searching for projects.

Similar to the changes made to Project.search the method
Project.search_by_title now also uses Arel so it can automatically use
ILIKE/LIKE instead of the lower() function.

This chance is broken up in two steps:

1. Use ILIKE on PostgreSQL and LIKE on MySQL, instead of using
   "WHERE lower(x) LIKE lower(y)" as ILIKE is significantly faster than
   using lower(). In many cases the use of lower() will force a slow
   sequence scan.

2. Instead of using 1 query that searches both projects and namespaces
   using a JOIN we're using 2 separate queries that are UNION'd
   together. Using a JOIN would force a slow sequence scan, using a
   UNION avoids this.

This method now uses Arel as Arel automatically uses ILIKE on PostgreSQL
and LIKE on MySQL, removing the need to handle this manually.

This allows the LIKE condition to use an index. Without a GIN + trigram
index LIKE queries using a wildcard at the start _won't_ use an index
and instead perform a sequence scan.

Move group activity feed to separate page for consistency with dashboard
and project pages

Fixes #14161. Part of #13480 

See merge request !3157

Fix incorrect gitlab.rb variable in CI docs

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/14115

See merge request !3187

[ci skip]

Improved search results filter dropdown

## Current

Currently filter dropdowns on search results page can be **very** long and off the page

![Screen_Shot_2016-03-11_at_15.25.24](/uploads/3418b0a6f4f8a0a8bd2441b53502c574/Screen_Shot_2016-03-11_at_15.25.24.png)

## New

Changed over to the new dropdown

![Screen_Shot_2016-03-11_at_15.29.06](/uploads/2d3a4a9b3e50f3e0fc1748a026cd5905/Screen_Shot_2016-03-11_at_15.29.06.png)

See merge request !3183

Upgrade `omniauth-saml` to 1.5.0 and document it's new capabilities.

With this MR I'm upgrading `omniauth-saml` to 1.5.0 to include new and improved functionality. See https://github.com/omniauth/omniauth-saml/blob/master/CHANGELOG.md for more details.

This MR includes new documentation, so @axil can you also take a look?

/cc @DouweM 

See merge request !3170

[ci skip]

Updated UI of award emoji

Closes #13878 

See merge request !3028

Removed benchmark suite and its documentation

Related issue: gitlab-org/gitlab-ce#13718

See merge request !3137

Updated gitlab_git to 9.0.1

This includes gitlab-org/gitlab_git!69 and will hopefully solve
gitlab-org/gitlab-ce#13808.

See merge request !3123

Fixes issue with issue sidebar toggle button not working

Closes #14195

See merge request !3165

Account settings

Closes #13854

![](https://gitlab.com/gitlab-org/gitlab-ce/uploads/4802a7b4f74f17d25a611ed1a2200445/account-settings.png)

See merge request !3039

Added discard button to comment form

Also changed the labels on the buttons to better match the action they are completing.

Closes #8057

See merge request !3085

Add error for ajax:error when submitting comments

Fixes #13814
![Screen_Shot_2016-02-25_at_1.54.56_PM](/uploads/d70d706d306079df1b00d70f09affb63/Screen_Shot_2016-02-25_at_1.54.56_PM.png)
cc @dblessing 

See merge request !2976

Support YAML alias/anchor usage in .gitlab-ci.yml

This allows to reuse one job as a template for another one:

```
job1: &JOBTMPL
  script: execute-script-for-job

job2: *JOBTMPL

```

This also helps to solve some of the issues in gitlab-org/gitlab-ci#342

See merge request !2958

Affix the build scroll controls

Closes #4709

See merge request !3109

Added in disable button for 2fa

Moved colours to variables

Closes #13854