Fix a memory leak in HTML::Pipeline::SanitizationFilter::WHITELIST

See merge request !6456

Add link to broadcast messages docs

[ci skip]

See merge request !6495

Fix database seeds for development environment

## What does this MR do?

This MR fixes database seeds for development environment and adds CI test for it.

## Why was this MR needed?

Database seeds for development environment are often broken, and we are not able to catch that when someone modified `db/fixtures` and forgets to reseed database.

Closes #22422

See merge request !6475

The previous fix introduced another leak; as it made
Banzai::Filter::SanitizationFiler#customized? always return false, so we
were always appending two elements to
HTML::Pipeline::SanitizationFilter::WHITELIST[:elements]. This growth in
the elements array would slow the sanitization process over time.

This reverts commit 504a3b5e.

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Speed up group milestones show page

See merge request !6457

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Fix Cycle Analytics landing widget state and improve state management in Vue.

## What does this MR do?
- Fixes Cycle Analytics help widget show/hide issue
- Addresses initial MR feedback with improving Vue state management logic
- Fixes cookie path of the help widget so when you close a help widget in a repo it won't be visible for other repos.

## Are there points in the code the reviewer needs to double check?
- Should we move `gl.cycleAnalyticsModel` to a new file.

## Why was this MR needed?
- Addresses feedbacks of [initial MR](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5986) and fixes #22483

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry 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 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?
Fixes #22483

See merge request !6492

Fixes #22508
[ci skip]

Makes Cycle analytics mobile friendly

## What does this MR do?
Makes Cycle analytics page mobile friendly

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

## Why was this MR needed?
Cycle analytics page was not mobile friendly

## Screenshots (if relevant)
![optionB](/uploads/a1d7f2f4db100e1a8aa76c0156ef8641/optionB.png)

## 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
- [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)
- [ ] 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)

## What are the relevant issue numbers?
fixes #22444

See merge request !6482

Make Gitlab::Redis.params safe for mutation

Would have avoided https://gitlab.com/gitlab-com/infrastructure/issues/464

Defends in depth against programming mistakes.

See merge request !6472

Compress fork SVG code

#### What does this MR do?
Cleans up fork SVG code using https://jakearchibald.github.io/svgomg/

![Screen_Shot_2016-09-03_at_9.17.40_AM](/uploads/7b27bda9493da3d2ee596dd20af9fc2f/Screen_Shot_2016-09-03_at_9.17.40_AM.png)

See merge request !6191

Fixed search dropdown labels not displaying

## What does this MR do?

Returns the search controller method after finding the project & group.

## Why was this MR needed?

The search controller was returning early when the search term was empty causing a bug where the dropdown toggles wouldn't show the correct text - instead defaulting to `Any`.

## Screenshots (if relevant)

![Screen_Shot_2016-09-09_at_12.09.57](/uploads/8c6bb36f4e163312314611d2877d5fa4/Screen_Shot_2016-09-09_at_12.09.57.png)

## What are the relevant issue numbers?

Closes #21783

See merge request !6277

Remove unused attributes

Closes #22282

See merge request !6465

Fix find file navigation links

## What does this MR do?
Modified the tables in [find file page](https://gitlab.com/ClemMakesApps/gitlab-ce/find_file/master), so that clicking the entire row will go to the file rather than forcing the user to click on the text

## Are there points in the code the reviewer needs to double check?
We should be good

## Why was this MR needed?
Resolve UI inconsistency. Other pages UX indicate that the rows are clickable when highlighted. It is not the case for this page

## Screenshots (if relevant)
Before:
![tdo6Jt3xmd](/uploads/31e7654c49bb141002cfec4ce859fb46/tdo6Jt3xmd.gif)

After:
![NdiIqqHa7R](/uploads/fa440ebaa847064ff098a98dfb7fef57/NdiIqqHa7R.gif)


## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) 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 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 #22016

See merge request !6290

Change "Please register or login" to "Please sign up or sign in"



See merge request !6443

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

Revert the "accurate issuable counts in issuable list" feature

## Why was this MR needed?

!6455 introduced a performance killer, so we revert it until we find a proper solution that's not killing performance.

## What are the relevant issue numbers?

Revert !6455 and !4960.

See merge request !6476

Describe how the recent changes of CI permissions affect builds

## What does this MR do?

This describes how the CI permission changes

See merge request !6451

[ci skip]

- Add link to external user
- Move build triggers up

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