Remove "not released" status from documentation

[ci skip]

See merge request !5024

squashed - refactor to cope with sub sub N relations probably using the sub_relations method recursively.

Add side shadow for unpinned sidebar



See merge request !5167

Make color that highligh today issues more lightweight



See merge request !5168

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

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

Fix typo in factory for projects.rb

## What does this MR do?

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

## Why was this MR needed?

## What are the relevant issue numbers?

## Screenshots (if 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)

See merge request !5100

Add reminder to not paste private SSH keys

## What does this MR do?

Just got the "How would you make GitLab better?" mail and thought that I could follow it.

This commit adds a short reminder to not paste the private part of an SSH key to the form where one can add SSH keys to one's account. I think that's an useful message, both for people who aren't that experienced yet and for people who are sleep-deprived. :-)

I decided to just list the most common key type, `ssh-rsa`. The full list of key types in the [CVS repository of OpenSSH](http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/usr.bin/ssh/sshkey.c?rev=HEAD&content-type=text/plain) contains some types which I'd regard as a bit obscure. Mentioning all of those types would probably clutter the form too much. We could think about whether to list what is probably the second most common key type, namely `ssh-dss`. But note that this key type [seems to be deprecated](https://security.stackexchange.com/questions/5096/rsa-vs-dsa-for-ssh-authentication-keys).

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

I didn't actually test this one-line change.

## Why was this MR needed?

It's not, strictly speaking, needed, but could be considered a nice addition.

See merge request !4399

Remove slow migration and add fix to sanitize errors

Getting rid of the slow migration and preventing the Error to occur

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19608

See merge request !5176

Run bundle install and update Gemfile.lock

!5078 didn't update the `Gemfile.lock` even though it added some restrictions on gem versions, this fixes that.

cc: @rymai 

See merge request !5159

Fix commit avatar alignment in compare view

Closes #19567 

See merge request !5128

Add blockquote fence syntax to Markdown

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/16564

Before Markdown rendering happens, this will transform this:

```
Let me quote this here email:

>>>
Dear friend,

How are you?

Greetings,

Me
>>>
```

Into this, saving me from having to prefix all of those lines with `>` manually when I copy some multiline text from another medium:

```
Let me quote this here email:

> Dear friend,
> 
> How are you?
> 
> Greetings,
> 
> Me
```

See merge request !3954

Update Gemfile.lock after versions were added in !5078

See merge request !5171

Bump google-omniauth-oauth2 to 0.4.1

Closes #19064

See merge request !4882

Re-use queries in reference parsers

This MR changes the reference parsing pipeline to cache queried objects and re-use them on subsequent runs. Data is cached in the `RequestStore` module so it's automatically flushed after a request.

Certain references are processed multiple times. For example, for every system note we check if it's a cross reference by getting the issues, MRs and commits it references. When redacting data we may end up querying these very same objects. By caching this we can quite drastically reduce timings and SQL query counts.

#15607

See merge request !5020

Fix typos in API documentation

See merge request !4949

Fix phpunit command in the docker example.

Closes https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/issues/1478

See merge request !5147

Fix wrong gitlab-shell version in 8.9-8.10 update guide

See merge request !5153

Fix typo and explain the precedence of STDERR and STDOUT

## What does this MR do?

Addresses comments https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5088#note_12884564

See merge request !5169

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

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

Make subnavigation a bit darker color



See merge request !5166

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

Update ui_guide.md with button capitalize rule

cc @jschatz1 @hazelyang @skyruler 

See merge request !5161

This caches various queries to ensure that multiple reference extraction
runs re-use any objects queried in previous runs.

Update New Snippet buttons.

## What does this MR do?

No longer shows New Snippet button to users who aren't able to create a new snippet in the given context.

Also removes the plus icon from the New Snippet buttons, as they're no longer used in other creation buttons.

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

Make sure the snippets pages don't break or show the buttons to users who shouldn't have access to them.

## Why was this MR needed?

Users that weren't logged in would click the New Snippet button and get a 404 error. You would also get 404 errors from the New Snippet button on project snippets for projects you weren't able to create snippets for.

## What are the relevant issue numbers?

Fixes #14595.

## Screenshots (if relevant)

Before:

![before1](/uploads/2c222cd981332d30772054cefadafa28/before1.png)

![before2](/uploads/2734f8a84ae293b08dd982f2ed7da028/before2.png)

After:

![after1](/uploads/c84aa9aec17056095271b0f24c6e9b5b/after1.png)

![after2](/uploads/70fe37ad7be5054bf20439ca0a1f5ccc/after2.png)

![after3](/uploads/afcd435c211482e9df25cb8971f1e65e/after3.png)

![after4](/uploads/9eab87440aae4991b508373ff36e3c7a/after4.png)

![after5](/uploads/f5ec167cb3e1115d3b3a43bd5231bc60/after5.png)

![after6](/uploads/c774cbb1f9babe3382ff69af7060b9c5/after6.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] 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 !4998

No longer shows New Snippet button to users who aren't able to create a new snippet in the given context.

Also removes the plus icon from the New Snippet buttons, as they're no longer used in other creation buttons.

Fixes #14595.