Only turn on Sidekiq throttling if column exists

If the database has not been migrated properly, the initializer for Sidekiq will fail to start and cause the whole Rails server to crash. This change checks the existence for the column and allows Rails to start even if the setting has not been added as a database column.

Closes #24452

See merge request !7446

[ci skip]

Centralized all LDAP config logic in to `Gitlab::LDAP::Config`. We had varying configuration for devise/omniauth and other things. For example, `user_filter` was never taken in to account for devise/omniauth so a user object would always be created, even if the user did not match the user_filter. 

Fixes gitlab-org/gitlab-ce#21195, https://gitlab.com/gitlab-org/gitlab-ce/issues/15396 and gitlab-org/gitlab-ce#13296

See merge request !6606

Remove unneeded nil checks

See merge request !7437

Fix project Visibility level selector not using default values

closes #20245

See merge request !7264

Added ability to put emojis into repository name

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

Ensure that regexp used is correct, I used the following list: http://www.unicode.org/Public/emoji/1.0/emoji-data.txt

See merge request !7420

use single quote for consistency

See merge request !7442

Resolve "Link from build page to its pipeline"

## What does this MR do?

Adds references and links to a build's pipeline within both individual build pages and the build index.

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

Nothing springs to mind

## Why was this MR needed?

See #22307

## Screenshots (if relevant)

![Screen_Shot_2016-10-24_at_3.45.39_PM_copy](/uploads/e6e8745a0a39d8b71c007e7df5fbd051/Screen_Shot_2016-10-24_at_3.45.39_PM_copy.png)

![Screen_Shot_2016-10-24_at_3.46.03_PM_copy](/uploads/3e2eb656347751f10bf62891b56ebcc7/Screen_Shot_2016-10-24_at_3.46.03_PM_copy.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- Tests
  - [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 #22307

See merge request !7082

Only run builds on master of CE or EE

This should reduce builds run by projects still running all pipelines for CE

See merge request !6869

If the database has not been migrated properly, the initializer for Sidekiq
will fail to start and cause the whole Rails server to crash. This change
checks the existence for the column and allows Rails to start even
if the setting has not been added as a database column.

Closes #24452

Fix link to index.md UX guide in development README.md

Fix wrong link to UX docs that introduced by
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7142

See merge request !7444

[ci skip]

Improvements to hover/active/focus states in header items

## What does this MR do?

Adds some improvements to buttons, dropdowns, inputs, etc. in the header area.

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

I'm not sure.

## Why was this MR needed?

Requested in an issue.

## Screenshots (if relevant)

![caret](/uploads/574135282e4b2e81476fdd6dd6c1c05d/caret.gif)![hover](/uploads/15a3b8a2aa89baf20270be97c452e006/hover.gif)

## 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
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #24202 


This is not complete yet. I'm new to this, so please let me know what all steps do I need to do (tests, changelog, etc.).

See merge request !7412

Fix record not found error on NewNoteWorker processing

Resolves #22678 

See merge request !6863

fix Super User spacing

See merge request !7433

update redis server details

See merge request !7436

The library we're using, default_value_for, is configured to interpret nil
as the default value, being ENABLED. Given the property can't be nil
this check is unneeded.

Added ability to put emojis into repository name

- Also remove unnecessary param

Centralize all LDAP config logic in `GitLab::LDAP::Config`. Previously,
some logic was in the Devise initializer and it was not honoring the
`user_filter`. If a user outside the configured `user_filter` signed
in, an account would be created but they would then be denied access.
Now that logic is centralized, the filter is honored and users outside
the filter are never created.

Update 8.14-rc1 migrations to minimize downtime and deploy time

## What does this MR do?

Modify 8.14-rc1 migrations and code to minimize downtime and deploy time

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

No

## Why was this MR needed?

8.14-rc1 migrations took too much time in staging, so we didn't want to take too much downtime in production

## Does this MR meet the acceptance criteria?

- 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 #24386

See merge request !7427

Ensure labels are loaded for all "show" methods of MR Controller

Closes #24397

See merge request !7416

See https://gitlab.com/gitlab-org/gitlab-ce/issues/24386

Allow certain Sidekiq jobs to be throttled

## What does this MR do?

Allows certain slow running Sidekiq jobs to be throttled. It is disabled by default and can be enabled via the Application Settings. 

![Screen_Shot_2016-11-04_at_4.51.24_PM](/uploads/a1f1d24c693fcdb278602765cd404d94/Screen_Shot_2016-11-04_at_4.51.24_PM.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing

## What are the relevant issue numbers?

Related to #23352

See merge request !7292

Migration to Vuejs version 2

List of required changes for our Vue usages 

- `init` ➡ `beforeCreate`
- `read` ➡ `mounted`
- `$els` ➡ `$refs`
- 🚫 `$remove` completely removed. ✅ Use `indexOf` and `splice`
- 🚫 HTML embedding with `{{{ }}}` is deprecated. ✅ Use `v-html`


See merge request !7254

Previously, they were only being loaded on the actual `show` action, but
not the actions representing the tabs (commits, builds, etc).

UX guide restructure

The goal of this MR was to update the current UI guide to more of an UX guide (starting to detail when to use certain controls and patterns), and add structure to help organize the information. This initial version of the UX guide also lays down the groundwork for principles and personality. This guide is currently documenting the existing design, and will continue to be updated as the design evolves.

Some inspiration/references used:
- https://medium.com/ge-design/ges-predix-design-system-8236d47b0891#.nkf0chj8r
- http://uxcellence.com/2015/11/04/product-principles/
- https://blog.asana.com/2013/10/design-principles/

See merge request !7142

[ci skip]

19205 Redesign group page header to match new navigation

## What does this MR do?
Redesigns group page to match comps

## Screenshots (if relevant)
Before:
![Screen_Shot_2016-11-08_at_12.50.53_PM](/uploads/6c958e2ab05c1a73c9a96de25490ba2b/Screen_Shot_2016-11-08_at_12.50.53_PM.png)
After:
![Screen_Shot_2016-11-08_at_12.50.34_PM](/uploads/822f81df8a0f82a4bdeee3739be5d1f7/Screen_Shot_2016-11-08_at_12.50.34_PM.png)

## 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
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #19205

See merge request !7363

Remove project_title additions from builds and environments

## What does this MR do?

Removed soon-to-be un-needed project title additions from builds and environments.

**This MR depends on !5998, which introduces subnav to these pages. Without it we're just removing a useful link.**

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

@iamphill Is this right of me? One of these still exists in `projects/artifacts/browse`, I'm not sure whether to fix the issue with `project_title`, which already has some issues with its chevron, or just remove it as it will soon be redundant.

## Why was this MR needed?

## Screenshots (if relevant)

**BEFORE:**

![Screen_Shot_2016-10-27_at_14.58.22](/uploads/2915289fb06603c33d1abbcdab70c962/Screen_Shot_2016-10-27_at_14.58.22.png)

**AFTER:**

![Screen_Shot_2016-10-27_at_14.58.29](/uploads/ad8574aeaa6771737bb9002d749b5559/Screen_Shot_2016-10-27_at_14.58.29.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry 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 you do - 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 #21764

See merge request !6160

Account for fixed position MR when scrolling to elements

## What does this MR do?

This MR accounts for the new merge request fixed affix bar when scrolling to an element on the MR page.

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

## Why was this MR needed?

The fixed MR tabs bar was not being taken into account when shifting permalink scroll targets so that they are unobscured by navigation elements.

## Screenshots (if relevant)

Issues discussion permalink:
![Screen_Shot_2016-10-26_at_12.29.26_AM](/uploads/e278f784252f2b79c466f56b4f36d198/Screen_Shot_2016-10-26_at_12.29.26_AM.png)

Merge request discussion permalink:
![Screen_Shot_2016-10-26_at_12.28.26_AM](/uploads/1e57357fffb815b217484f09377f3c23/Screen_Shot_2016-10-26_at_12.28.26_AM.png)

Merge request diff permalink:
![Screen_Shot_2016-10-26_at_12.29.02_AM](/uploads/269f3a4a4075932355f665322387db86/Screen_Shot_2016-10-26_at_12.29.02_AM.png)

Commit diff page permalinks work as well, but aren't highlighted currently (see: #23696)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- Tests
  - [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 #23520

See merge request !7051