Send 500 errors as JSON in the API

Fix bug where commit data would not appear in some subdirectories

Fix issue where commit data would not show up in some subdirectories due to escaped slashes. For example:

https://gitlab.common-lisp.net/ecl/ecl/tree/develop/src/gc (now patched with fix)

The upgrade from Rails v4.1.2 to v4.1.9 (76aad9b7) caused slashes in a tree to be escaped automatically. Using a wildcard glob in the route prevents this behavior.

* Closes #1478, #1459
* Closes https://github.com/gitlabhq/gitlabhq/issues/9037

See merge request !581

Remove duplicate settings for default_url_options

Closes #2269

See merge request !1797

Fix adding new group members from admin area

Fix for #2222

Tests for this case already exists but it was green.
It related to current way dealing with ajax selectbox.
Improving tests might be a reason for another merge requests - everyone is welcome to participate.

See merge request !1796

Add a rake task to automatically restart foreman when changes occur

Add more instructions on how to publish docker images yourself.

See merge request !1800

Fix (project_)name_regex to accept non-ASCII letters and dash

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

Fix broken file browsing with relative submodule in personal projects

Git submodules with relative links work fine for projects in groups but not in personal projects. This patch fixes this issue.

To reproduce the problem, go here:

https://gitlab.com/andrewwu.tw/submodule-test/tree/master

Closes https://github.com/gitlabhq/gitlabhq/issues/7554

See merge request !565

Add api version property on hipchat service

Upgrade Docker build to v7.10.0

See merge request !568

This reverts commit 548f1828.

Bootstrap 3.3.4

Fix .container position on navbar

Fix missing X-UA-Compatible meta tag

Add X-GitLab-Event header for web hooks

Fix contributions calendar empty problem under mysql

Add capybara-screenshot gem

This is a handy little gem that automatically saves the page and a screenshot when a Capybara test fails to `tmp/capybara/` so you can easily see why it might have failed without adding your own `save_and_open_page` directive in the code.

Also reduces the timeout for Capybara tests when not in a CI environment.

See merge request !578

Get Gitorious importer to work again.

Fixes #1504.

See merge request !576

Use Projects::CreateService to fork projects so that after-create hooks are run.

Makes for cleaner code and less duplication, and causes the "User created project Namespace / Project" event to be posted and system hooks to be run.

See merge request !575

Add new admin settings

Add new settings to the admin web UI for default project and snippet visibility levels.  See #2027.

### New settings:

![default_visibility_settings](https://dev.gitlab.org/gitlab/gitlabhq/uploads/bd6d296e39ea3c90ca6a5254b8eb1fef/default_visibility_settings.png)

See merge request !1795

Minor design change grab-bag 🎉

I started with one simple change and found a few more, so here they are.

### Simplify icon style selectors

All FontAwesome icons have an `fa` class, so just use that.

### Don't override color of code blocks in notes

This was a pet peeve of mine.

| Before | After |
|:------:|:-----:|
| ![Screen_Shot_2015-04-23_at_4.14.23_PM](https://gitlab.com/gitlab-org/gitlab-ce/uploads/c77cb0816bf0f05cb8c4105cdd8b3ec6/Screen_Shot_2015-04-23_at_4.14.23_PM.png) | ![Screen_Shot_2015-04-23_at_4.15.44_PM](https://gitlab.com/gitlab-org/gitlab-ce/uploads/463c1d2052e12444563f5e2c102ac51e/Screen_Shot_2015-04-23_at_4.15.44_PM.png) |

### Items with tooltips don't need a 'data-original-title' attribute

This attribute gets added dynamically by Bootstrap's tooltip JS based on the `title` attribute

### Fix Profile > Design live-updating

`ui_blue` wasn't added to the list of classes to remove, so if a user changed to that theme, any subsequent changes wouldn't be live-updated.

This change refactors Gitlab::Theme a bit to make it harder for this to happen in the future with new themes.

### Remove the `has_bottom_tooltip` class

Bootstrap's tooltip JS can read the placement from a `data-placement` attribute.

Further, when we supply the `selector` option to `tooltip`, tooltips will be added to any dynamically-added elements matching the selector, without us having to re-call the `tooltip` method.

See merge request !569

google -> Google

The upgrade from Rails v4.1.2 to v4.1.9 (76aad9b7) caused slashes in a tree to be escaped automatically.
Using wildcard globs prevents this behavior.

Closes #1478, #1459