Style merge request CI widget to match MR/Issue box

![Screenshot 2014-10-07 15.13.12](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/7208a92094/Screenshot_2014-10-07_15.13.12.png)

![Screenshot 2014-10-07 15.13.25](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/f04d8d3f7b/Screenshot_2014-10-07_15.13.25.png)

See merge request !1158

Gitlabflow references

See merge request !1160

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Snippets refactoring: rename public to internal. STEP 1

See merge request !1157

Remove annoying i18n deprecation

Thanks to this guy http://stackoverflow.com/a/20381730

Fixes #527

See merge request !197

Factor markup? || gitlab_markdown? into new method

webbrowsers -> web browsers

number formatting fix

Slack integration

See merge request !1151

Add task lists to issues and merge requests

Raise on forgery

Fixes #1572

See merge request !1156

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Improve autolink

Fixes #1649

See merge request !1155

Prevent PG::Error exception

Prevent PG::Error exception when check commit reference on commit

Fix #1646

See merge request !1154

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Gitlab git bump

Fixes #1643

See merge request !1153

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

[minor-refactor] Remove unused title parameter on merge request creation helper.

Add tests for the new task list functionality in the Markdown parser and
in issues and merge requests.

Make the Markdown parser recognize "[x]" or "[ ]" at the beginning of a
list item and turn it into a checkbox input.  Users who can modify the
issue or MR can toggle the checkboxes directly or edit the Markdown to
manage the tasks.  Task status is also displayed in the MR and issue
lists.