Location field in user profile

Twitter allows you to set string with location information.
I find it very useful in work to know where user from. It allows to communicate with knowing time difference and cultural things.

See merge request !411

Change the name of the key used for bitbucket importer.

See merge request !1733

Link to CI with ref

gitlab/gitlab-ci#162

!!! Should be merged simultaneously with https://dev.gitlab.org/gitlab/gitlab-ci/merge_requests/129

See merge request !1638

Fix commits routing for branches with slash

Fixes https://github.com/gitlabhq/gitlabhq/issues/8990

See merge request !408

Make issue and merge request sidebar more compact

* move votes block to participants
* make smaller font in sidebar
* remove js for upvoting since it differs from logic on backend and does not work correctly

Fixes #1253

Tested on different screens: HD, 1366x768, 1024x600

See merge request !410

Update merge_status state to allow more transitions

Previously you could only transition from the unchecked state to one of the others. This meant that the mark_as_unmerged call in AutoMergeService would rarily be able to actually transition the state. As it would usually have already been set to can_be_merged before it hit that service.

Spec and Spinach tests have been run locally and all pass.

See merge request !405

* move votes block to participants
* make smaller font in sidebar

[security] gems update

[doorkeeper] added filtering of sensitive information (like secret key) from production.log

[gollum lib] remote code execution (in search field). We don't have search for wiki but it is better to have this fix.

Nothing critical!!!

related to #2143

See merge request !1732

This reverts commit 00607d4f, reversing
changes made to edfc7d0d.

New branch

See merge request !406

Add error message when have error on profile screen

Revert "Increase timeout for Git-over-HTTP requests."

This reverts commit 516bcabb.

For #2164

cc @marin @douwe

See merge request !1730

This reverts commit d70126c1.

This reverts commit 516bcabb.

Conflicts:
	Gemfile

Remove mention of branch to commit to when new file is added through UI

See merge request !1731

Fix small grammar issue on projects show page

Make MR and issue numbers clickable links in MR and issue lists.

Fix cross-references that contain underscores

### What does this MR do?

Cross-references that contain underscores confuse the Markdown renderer and don't work properly. For example:

1. In  `myacct/project_one#456`, add a comment that includes a reference to `myacct/project_two#123`.
2. The comment in `myacct/project_one#456` links correctly.
3. The system note in `myacct/project_two#123` is incorrectly linked as:

`mentioned in issue myacct/projectone#456_`

This MR removes the use of the `_` character in the system notes to prevent Markdown confusion.

See a full discussion in #1160.

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

To preserve backwards compatibility with existing system notes, there is a SQL wildcard match for notes having underscores. This seemed safer than migrating all notes.

### Why was this MR needed?

In an ideal world, the Markdown parser would be able to handle references containing underscores with or without escape sequences. However, there are a number of issues:

1. RedCarpet's parser for emphasis block is pretty dumb: it treats `#` as a word break and thus even the `intra_word_emphasis` flag has no effect.
2. The parser is in C and can't be changed easily.
3. There is no way to insert an escape sequence for emphasis blocks.

The only way around this is to switch to something like CommonMark, which does support escape sequences.

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

Issue #1160

### Screenshots

Before:

![Screen_Shot_2015-03-19_at_1.39.29_AM](https://gitlab.com/gitlab-org/gitlab-ce/uploads/a1db4b96c0df2f10d9855ed5abe976ca/Screen_Shot_2015-03-19_at_1.39.29_AM.png)

After:

![Screen_Shot_2015-03-19_at_1.39.35_AM](https://gitlab.com/gitlab-org/gitlab-ce/uploads/189a062c2d19645eec1782ac1f0d4f2f/Screen_Shot_2015-03-19_at_1.39.35_AM.png)

See merge request !385

Update poltergeist to support phantomjs 2.0

In response to [my issue](https://gitlab.com/gitlab-org/gitlab-development-kit/issues/36) on the GDK.
PhantomJS 1.8 was not in the repo's anymore. Only poltergeist needed it, but they support PhantomJS 2.0 since 1.6.0. (next release since 1.5.1) [Their CHANGELOG](https://github.com/teampoltergeist/poltergeist/blob/master/CHANGELOG.md).

Tested locally with Ruby 2.1.5. As this took ages, I haven't tested further.

See merge request !403