Removing and combining sass variables

* Removes/combines a good portion of our many shades of gray, according to https://gitlab.com/gitlab-org/gitlab-ce/uploads/207006b0aeadee57499c891f173198f4/Shades_of_grey_-_combined.png
* Renaming variables according to saturation etc will be in separate MR

See merge request !8052

Introduce deployment services, starting with a KubernetesService

## What does this MR do?

Adds a minimal `KubernetesService` and introduces the idea of deployment services, generally.

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

## Why was this MR needed?

Two issues scheduled for 8.15 both require a Kubernetes service - #22864 and #23580 - but they use it for very different things. Add a minimal kubernetes service to avoid conflicts later.

## Screenshots

![Screen_Shot_2016-12-14_at_12.44.13](/uploads/77d38baf2a196118f0cf7e2b996a65f3/Screen_Shot_2016-12-14_at_12.44.13.png)

## Does this MR meet the acceptance criteria?

- [x] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #22985

See merge request !7994

add node_modules to our eslintignore settings

## What does this MR do?

Adds `/node_modules` directory to `.eslintignore` so we don't lint npm modules in our build process.

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

## Why was this MR needed?

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #25690

See merge request !8089

Remove white space between nav items

Fixes annoying white space between items on navigation bars.

Before
![Screen_Shot_2016-12-13_at_6.06.11_PM](/uploads/605b49822f93168901bedc5ceb6490a3/Screen_Shot_2016-12-13_at_6.06.11_PM.png)

After
![Screen_Shot_2016-12-13_at_6.06.22_PM](/uploads/5c2e6432be477deaaf544cf81ec493e9/Screen_Shot_2016-12-13_at_6.06.22_PM.png)

See merge request !8078

Cursor now changes to a pointer when mousing over stages on Cycle Analytics page

When mousing over the different stage headers on the Cycle Analytics page, the mouse cursor will now change to a pointer, indicating these sections are clickable.

Closes #24803  

cc: @awhildy

See merge request !7921

Adds tests for Custom Event polyfill

## What does this MR do?
Adds tests for CustomEvent polyfill.

## Does this MR meet the acceptance criteria?

- [x] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #24927

See merge request !7996

Modify namespace name and path validation

## What does this MR do?

* Allow same namespace name with different parent_id
* Allow same namespace path. Uniq validation should be handled by routes table

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

migrations

## Why was this MR needed?

So we can use same name in different nesting like: 

```
gitlab-ce/foo
gitlab-com/foo
foo/gitlab-ce
```

## Screenshots (if relevant)

no

## Does this MR meet the acceptance criteria?

- ~~[Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added~~
- ~~[Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)~~
- ~~API support added~~
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ce/issues/2772

See merge request !8013

Merge Request - https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8013

# Conflicts:
#   db/schema.rb

Add support for nested groups to admin routing

See merge request !8008

Updates the docs to require GitLab Shell 4.0.3

See merge request !8050

Detailed build statuses

## What does this MR do?

Implements detailed statuses for `Ci::Builds` and `CommitStatus`.

It also adds a new icon for manual build.

## Screenshots

![manual_builds_icon](/uploads/22b5c594350856c85398ef705a635f8b/manual_builds_icon.png)

## What are the relevant issue numbers?

See #24273, closes #22642

See merge request !7989

Fix wrong error message expectation in API::Commits spec

See commit message or https://gitlab.com/gitlab-org/gitlab-ce/issues/25651#note_19996076 for the explanation.

Closes #25651

See merge request !8083

Encode when migrating ProcessCommitWorker jobs

## What does this MR do?

This adds encoding logic to the migration for ProcessCommitWorker, ensuring it doesn't throw errors when the input can not be converted to UTF-8 without extra help.

## What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ce/issues/25489

See merge request !8064

Fix broken link for latest deployment

## What does this MR do?

Creates a new helper for the latest deployment link.

## Why was this MR needed?

A helper that returns a link was being called inside another helper that creates a link, resulting in  `builds/<a href="builds/ID>#id</a>`

## What are the relevant issue numbers?

Closes #25136

See merge request !7839

This was because the MR was a bit behind master and the error message
got updated in the meantime by 79aad815.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Prevent overflow with vertical scroll when we have space to show content

## What does this MR do?
Removes vertical and horizontal scroll from builds, environments and pipelines tables by adding a media query since this is only necessary in smaller screens.

## Screenshots (if relevant)
![scroll](/uploads/6b9e3584df6e4ca29553d2ff576b794e/scroll.jpg)

## Does this MR meet the acceptance criteria?

- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
 Closes #20052

See merge request !8061

Backport hooks on group policies for the EE-specific implementation

See https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/822#note_19955431

See merge request !8066

Adds the ability to cherry pick a commit via the API. Right now it only supports to directly cherry pick a commit and not starting a MR from it. Shall we do that also for the API?

Closes #25450

See merge request !8047

For single line Git commit messages, the close quote should be on the same line as the open quote

_Originally opened at !7299 by @jzinn._

- - -

## What does this MR do?

Chomps merge commit messages so that there is not a dangling close quote.

A better solution would be not to use quotes at all, but to set off the message in a `<div>` with a background color.

## Screenshots (if relevant)

![Screen_Shot_2016-11-04_at_8.06.54_PM](/uploads/6e749c5227d88a9bfea64e70cccaf14a/Screen_Shot_2016-11-04_at_8.06.54_PM.png)

See merge request !7975

API: Memoize the current_user so that the sudo can work properly

Closes #25482

See merge request !8017

Replace the Spinach specs for admin settings with RSpec feature specs as per #23036 

Part of #23036

See merge request !8058

API: Ability to get group's project in simple representation

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/25412

See merge request !8060

If the source encoding is not UTF-8 we need to encode the data as
`JSON.dump` may throw an error if the input can not be converted to
UTF-8. We only encode when necessary to reduce the overhead.

Fixes gitlab-org/gitlab-ce#25489

Adds changelog

Add index to routes table on lower path for postgresql

Improve performance of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7121 

See merge request !8041

Signed-off-by: Rémy Coutable <remy@rymai.me>