Rename all uses of Buildbox to Buildkite

Closes #2214

See merge request !1759

Fix event-title max-width in the dashboard

Include creator_id in project info of API

Revert "Preload lib/"

This reverts commit 5511a731.

The original commit added this because it also enabled threadsafety, a change which was itself later reverted in 66d6c809, but this got left behind.

I don't fully understand the reasoning behind it so if I'm wrong, please tell me.

My reasoning for reverting it is that it messes with Rails' (and by extension Spring's) class reloading during development. When I was working in `lib/gitlab/markdown` and had to stop and restart the server every time I made a change, I didn't know it at the time, but this was why. That was a huge pain point.

If it's needed for production perhaps we could add a `if Rails.env.production?` clause around it so that it doesn't mess with development.

See merge request !1758

Update redcarpet to 3.2.3

Closes #2211

See merge request !1756

Fix broken file browsing with a submodule that has a relative link

## What does this MR do?

This MR fixes an error that occurs when browsing a submodule with a relative link.

### Are there points in the code the reviewer needs to double check?

I re-wrote the function because I was confused by how the first one was supposed to work. Please review if it's clearer.

### Why was this MR needed?

A 500 Error would occur when using the file browser on a repo with a submodule. Here's how to reproduce the bug:

1. Start a new project in GitLab.
2. Clone git://git.gniibe.org/gnuk/gnuk.git/ locally.
3. Push repo to new project.
4. Click on "Files" in the project.

The .gitmodules file:
```
[submodule "chopstx"]
        path = chopstx
        url = ../../chopstx/chopstx.git
```
### What are the relevant issue numbers / [Feature requests](http://feedback.gitlab.com/)?

1. #775
2. #1385
3. https://github.com/gitlabhq/gitlabhq/issues/8153
4. https://github.com/gitlabhq/gitlabhq/issues/8881
5. https://github.com/gitlabhq/gitlabhq/issues/7554

See merge request !508

Move current user to the top of the list in author/assignee filter

### What does this MR do?

This MR puts the current user at the top of the user list in the author/assignee filters.

### Are there points in the code the reviewer needs to double check?

Is it best to do this in the JavaScript as it is in this MR, or are we better off adding an argument to the `/users` API to put the current user on top?

Also, I elected to put the current user after "Any" and "Unassigned"--it looked better. Do you agree?

### Why was this MR needed?

If you're trying to look for "Me" in the list, often you have to scroll down a long way to find yourself. Using the filter to find yourself is yet another step requiring the keyboard, and it's easy to forget that feature is available.

### What are the relevant issue numbers / [Feature requests](http://feedback.gitlab.com/)?

#1321 and #1396

### Screenshots

Before:

![Screen_Shot_2015-04-08_at_11.18.44_PM](https://gitlab.com/stanhu/gitlab-ce/uploads/4c28ae5a3a51a8329c806ecfbc549071/Screen_Shot_2015-04-08_at_11.18.44_PM.png)

After:

![Screen_Shot_2015-04-08_at_11.20.06_PM](https://gitlab.com/stanhu/gitlab-ce/uploads/ff3b8bdf38467236edbcc29401cd1235/Screen_Shot_2015-04-08_at_11.20.06_PM.png)

See merge request !505

Closes #775

This option defaults to true in RedCarpet 3.2.0, but we handle
sanitization later in the process with html-pipeline.

Closes #2211

These files don't match their naming convention, but for organizational
purposes it makes sense.

Lets Rails autoload these files by name

This reverts commit 5511a731.

Project fork on CI side

https://dev.gitlab.org/gitlab/gitlab-ci/issues/187

!!! GitLab CI side MR - https://gitlab.com/gitlab-org/gitlab-ci/merge_requests/56

See merge request !499

Closes #1321

Fix bug where Wiki pages that include a '/' were no longer accessible

### What does this MR do?

This MR fixes a regression that caused Wiki pages that included a '/' to no longer be accessible.

### Are there points in the code the reviewer needs to double check?

Are there cases that `wiki_helper.rb` doesn't handle?

### Why was this MR needed?

The upgrade from Rails v4.1.2 to v4.1.9 (76aad9b7) caused slashes in a model ID to be escaped automatically. We can no longer use the built-in the URL helpers to generate the links for Wiki pages if we want to maintain support for slashes. There is no option to tell the formatter otherwise:

http://stackoverflow.com/questions/25031791/rails-4-1-2-to-param-escapes-slashes-and-breaks-app

The Rails code in question is here:

https://github.com/rails/rails/blob/4-1-stable/actionpack/lib/action_dispatch/journey/visitors.rb#L159

### What are the relevant issue numbers / [Feature requests](http://feedback.gitlab.com/)?

#1363

See merge request !502

Move project file links to tab bar.

The sidebar was getting awfully crowded, so I moved the file links to the tab bar alongside Activity and Readme. Unlike Readme, these files are not actually loaded in a tab, but simply link to the relevant blob, because we don't want to unnecessarily load the potentially large changelog or contribution guide on every project page load.

![Screen_Shot_2015-04-06_at_15.04.21](https://gitlab.com/gitlab-org/gitlab-ce/uploads/962e8073ab6dc8797f93ee754eb275ed/Screen_Shot_2015-04-06_at_15.04.21.png)

See merge request !497

Corrected steps for creating a patch release

Added step to bump all versions (CE, EE, CI) every time there is a patch release and the reasoning behind it

See merge request !1754

Make the "New Application" form's error messages visible

Prior, if you submit the form without values the error text and the form fields were white-on-white:

![Screen_Shot_2015-04-01_at_8.25.56_PM](https://dev.gitlab.org/gitlab/gitlabhq/uploads/17eb44e65fc9c5ddd4a529e3927cd9b6/Screen_Shot_2015-04-01_at_8.25.56_PM.png)

After:

![Screen_Shot_2015-04-06_at_10.13.07_PM](https://dev.gitlab.org/gitlab/gitlabhq/uploads/be53d6971ec1c34f415e75a0307b6577/Screen_Shot_2015-04-06_at_10.13.07_PM.png)

See merge request !1752

Render a 404 when RefsController#logs_tree gets an HTML request

Fixes #2152

See merge request !1748

Improve wording below signup box

Before:

![Screen_Shot_2015-04-07_at_5.46.31_PM](https://dev.gitlab.org/gitlab/gitlabhq/uploads/a5433c7c423fd37cffe4c2352a833dcf/Screen_Shot_2015-04-07_at_5.46.31_PM.png)

After:

![Screen_Shot_2015-04-07_at_5.45.05_PM](https://dev.gitlab.org/gitlab/gitlabhq/uploads/46e13756a8dc389e6f87de0097433e36/Screen_Shot_2015-04-07_at_5.45.05_PM.png)

See merge request !1755

Typo -- findAndollowLink -> findAndFollowLink

Pushed here to get working CI.

See merge request !1750

add necessary dir for uploads in update to 6.7

Documentation on how to fork a project

Added documentation on how to fork a project.

/cc @sabba

See merge request !1623