Seed Award Emoji while seeding the database

## What does this MR do?

Lets `rake dev:setup` create award emoji on _some_ awardables. Seemed overkill to give all that privilege. 

See merge request !4555

Fix the logo in header not being an anchor link.

## What does this MR do?

Adds an actual link to the Tanuki in the header instead of a `Turbolinks.visit()`.

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

Do we care that this reverts the Safari issue fixed in !2690? I feel bad, but it's hacky and there's not a great way to fix it here.

## Why was this MR needed?

You couldn't open the home page in a new tab before, it was very annoying.

## What are the relevant issue numbers?

Fixes #18604 

cc: @rspeicher 

See merge request !4661

Fixed issue with move dropdown not being searchable

## What does this MR do?

Adds the ability to search the project move dropdown.

## What are the relevant issue numbers?

Closes #18634 

## Screenshots (if relevant)

![search](/uploads/f10a9a16b608308c1b3c66f186f57f80/search.gif)

See merge request !4666

Don't allow U2F set up unless an authenticator app is set up

Closes #17333 

# TODO

- [ ]  #17333 Authenticator should be set up before enabling U2F
    - [x]  Implementation
    - [x]  Fix/add tests
    - [x]  Refactor
    - [x]  Wait for [build](https://gitlab.com/gitlab-org/gitlab-ce/commit/964c98a3c427cac6e3de88ddc74a9f172ee9742d/builds) to pass
    - [x]  Assign to endboss for review
    - [x]  Address @DouweM's comments
        - [x]  No need for `javascript:void(0)`
        - [x]  Add screenshots
    - [ ]  Wait for merge

# Screenshots

![Screen_Shot_2016-06-15_at_8.18.03_AM](/uploads/26531fa7f6e5d7617fd11d1779021b4f/Screen_Shot_2016-06-15_at_8.18.03_AM.png)
![Screen_Shot_2016-06-15_at_8.18.37_AM](/uploads/ceaae97a987a15d3e04dd76aa8a944bd/Screen_Shot_2016-06-15_at_8.18.37_AM.png)
![Screen_Shot_2016-06-15_at_8.18.47_AM](/uploads/394224d5fcff759d5acc3bf39a138530/Screen_Shot_2016-06-15_at_8.18.47_AM.png)

See merge request !4585

Resolve "Track the number of new Redis connections per transaction"

## What does this MR do?

Add a new metric counter, `new_redis_connections`, that contains the number of calls to `Redis::Client#connect` in the current transaction.

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

Not sure. I tested this in kind of a brute-force way:

1. Add a debugger in the monkey-patched `connect` method.
2. With metrics enabled, start the app and load a page.
3. The first Redis connection is created by `Rack::Attack` and isn't in a transaction, but still works fine.
4. The second Redis connection is within a transaction (the page load), and increments the counter.
5. If I reload the page, neither debugger is hit.
6. If I use a Redis client and do `CLIENT KILL` on my two existing clients, then reload the page, I get 3 and 4 again.
7. If I disable metrics collection, the debugger never gets hit.

## Why was this MR needed?

We may have a Redis connection leak somewhere, so adding metrics will let us track this.

## What are the relevant issue numbers?

Closes #18451.

## Screenshots (if relevant)

Hahaha nope, not relevant.

## Does this MR meet the acceptance criteria?

- [ ] [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
- [ ] 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 you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

cc @yorickpeterse 

See merge request !4649

Add docs for assigning labels/milestone when moving issue

Extends https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3934

See merge request !4069

[ci skip]

Document CI_BUILD_TOKEN

## What does this MR do?

Adds `CI_BUILD_TOKEN` to CI variables documentation.


See merge request !4664

Include user relationship when retrieving award_emoji

See merge request !4647

Closes #18634

Avoiding N+1 when showing grouped awards and when 
calculating participants for awardable entities

Don't fail builds for projects that are deleted when they are stuck

## What does this MR do?

Solves when dropping stuck connection.
```
Dropping stuck pending build 1545510 for runner 
NoMethodError: undefined method `origin_merge_requests' for nil:NilClass
    from /opt/gitlab/embedded/service/gitlab-rails/app/services/merge_requests/base_service.rb:50:in `merge_request_from'
    from /opt/gitlab/embedded/service/gitlab-rails/app/services/merge_requests/base_service.rb:57:in `each_merge_request'
    from /opt/gitlab/embedded/service/gitlab-rails/app/services/merge_requests/add_todo_when_build_fails_service.rb:5:in `execute'
    from /opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/metrics/instrumentation.rb:164:in `execute'
    from /opt/gitlab/embedded/service/gitlab-rails/app/models/commit_status.rb:51:in `block (2 levels) in <class:CommitStatus>'
    from /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/state_machines-0.4.0/lib/state_machines/eval_helpers.rb:79:in `call'
...
```

This happens, because that `default_scope` of `Projects` filters returns the projects that are not deleted, where `Ci::Build` doesn't take into account.


See merge request !4609

- We added a `current_user.two_factor_via_otp?` check to the view. When
  rendering the view via the teaspoon fixture, `current_user` is `nil`.

- Also change the help message to indicate that an authenticator app is
  now a prerequisite for U2F.

Fix typo in obtaining a backtrace from all threads in gdb



See merge request !4612

Fix note polling when a window has been hidden

`refresh` was called, `refreshing` was set to true, but then because
`document.hidden` was true, `getContent` was never called, and
`refreshing` never got reset to `false`, which stopped polling entirely
until refresh.

See merge request !4635

Manually create todo for issuable

## What does this MR do?

Adds a button to the sidebar in issues & merge requests to allow users to manually create a todo item themselves.

## What are the relevant issue numbers?

Closes #15045 

## Screenshots (if relevant)

![Screen_Shot_2016-06-07_at_09.52.14](/uploads/00af70244c0589d19f241c3e85f3d63d/Screen_Shot_2016-06-07_at_09.52.14.png)

![Screen_Shot_2016-06-07_at_09.52.06](/uploads/e232b02208613a4a50cff4d1e6f119ff/Screen_Shot_2016-06-07_at_09.52.06.png)

![Screen_Shot_2016-06-07_at_09.51.14](/uploads/f1d36435d49ab882538ae2252bec8086/Screen_Shot_2016-06-07_at_09.51.14.png)

See merge request !4502

Only show notes through JSON on confidential issues that the user has access to

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/18535

See merge request !1970

Update CHANGELOG

## What does this MR do?
Updates the CHANGELOG


See merge request !4549

Fixes bulk-assign labels not working when navigating through pages

## What does this MR do?
This MR fixes an issue on bulk-assign labels not working when navigating though pages. The functionality was not working because events on checkboxes weren't working. This re-runs `Issuable.initChecks()` and makes sure we are not leaving zombie event handlers by turning them off first.

Also fixes tests to use `wait_for_ajax` since label filtering is now using `Turbolinks` for redirection.

## Does this MR meet the acceptance criteria?

- [ ] [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
  - [x] All builds are passing
- [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)

See merge request !4632

Aligned the two navs horizontally

## What does this MR do?

Previously the 2 top navs were not aligned horizontally together. The top nav would be slightly to the left due to the settings dropdown. This corrects that by putting `position: absolute` on the dropdown toggle.

## What are the relevant issue numbers?

Closes #18513 

## Screenshots (if relevant)

![Screen_Shot_2016-06-13_at_10.20.22](/uploads/46f39a84dde74707578970f70ddda511/Screen_Shot_2016-06-13_at_10.20.22.png)

See merge request !4616

Update allocations Gem & ignore classes without names

## What does this MR do?

1. Updates the allocations Gem to 1.0.5 so it can be used on 2.2/2.3 without crashing
2. Changes the background sampler to ignore classes/modules without a name (as we can't do much with these)

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

No.

## Why was this MR needed?

Using MRI 2.2 or 2.3 would lead to a segmentation fault in the allocations Gem, sometimes this problem would also occur on 2.1

## What are the relevant issue numbers?

Not an issue, but the merge request that highlighted these problems: !3807

## 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
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [x] 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 you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4645

Uses outerWidth instead of width

Revert "Added API endpoint for Sidekiq Metrics"

@DouweM please merge my accidental push to master.

See merge request !4651