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Part of  #14838    
Closes #17323    

<img src="/uploads/33d2dbc17e94329891108c4e80d4aff3/nav.gif" width="800px">

See merge request !4103

Support multi-line tag messages

_Originally opened at !2853 by @clns._

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Tag messages in Git can include a short summary of what changes are included in a release and any other relevant information. So I think GitLab should support multi-line tag messages, both in the "New Tag" interface and when viewing the tag.

Also a non-technical user could use GitLab's interface to create releases, but at the moment this is impossible because he cannot enter a multi-line message. This would've been very handy, otherwise he would need to do it from the command line or other GUI program, which is not something a non-technical user has access to or knows how to do.

This merge request adds support for multi-line tag messages. Below are the impacted screens. Let me know if I should change anything.

This would close #3690 and #2460

![image](/uploads/d33bede1141bfb10c5d9c301ee1cb0ec/image.png)
![image](/uploads/ebfea358c1a5986e7b95ad31748f7a6a/image.png)

See merge request !3833

Revert "Merge branch 'wiki-fix' into 'master'"

This reverts commit 4cc85a58 (!4026), reversing
changes made to 90ae445b.

From https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4026#note_11719950:

>  1. On Ruby 2.1.x, the [`uri.path = ::File.join(project_wiki_base_path, uri.path)`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/banzai/filter/wiki_link_filter.rb#L39) raises an `URI::InvalidComponentError: bad component(expected relative path component): http://bar.com/baz` error in `Banzai::Filter::WikiLinkFilter#rebuild_wiki_uri`, which is then rescued in [`Banzai::Filter::WikiLinkFilter#process_link_attr`](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/lib/banzai/filter/wiki_link_filter.rb#L34), thus the link is not modified and the tests pass.
1. On Ruby 2.2.x, the same line doesn't raise an error anymore, thus tests are broken on Ruby 2.2 only. I didn't really understand yet why having absolute links in the wiki would break some tests vs having relative links as before, but I think the safest course to action is to revert this MR and to find another fix (probably just prepending `ProjectWiki#wiki_base_path` with the relative URL path component if we are in the case of a relative URL...
/cc @artem-sidorenko

Just a FYI note: no need to pick into `8-7-stable` since the original commit was not picked.

See merge request !4105

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

Remove the annotate gem and delete old annotations

In 8278b763 the default behaviour of annotation
has changes, which was causing a lot of noise in diffs. We decided in #17382
that it is better to get rid of the whole annotate gem, and instead let people
look at schema.rb for the columns in a table.

Fixes: #17382 

/cc @yorickpeterse 

See merge request !4099

This reverts commit 4cc85a58, reversing
changes made to 90ae445b.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Allow Redmine issue references to work as intended

Closes #14527 and #14894 

See merge request !4048

Use a case-insensitive check to compare URI schemes

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/17299

See merge request !1965

Revert "Merge branch 'patch-1' into 'master'"

This reverts merge request !4030. /cc @stanhu @axil @aral

See merge request !4097

Closes #1625

Fix adding a todo for private group memebers



See merge request !4081

Add if exists to drop command

Add `IF EXISTS` as a precaution. Related to gitlab-org/gitlab-ce!4020

See merge request !4100

In 8278b763 the default behaviour of annotation
has changes, which was causing a lot of noise in diffs. We decided in #17382
that it is better to get rid of the whole annotate gem, and instead let people
look at schema.rb for the columns in a table.

Fixes: #17382

Sanitize milestones and labels titles

fixes #15394 

See merge request !4046

This reverts merge request !4030

API: Expose Issue#user_notes_count and MergeRequest#user_notes_count

_Originally opened at !2954 by @cnam812._

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Expose `Issue#user_notes_count` and `MergeRequest#user_notes_count` through the API.

See merge request !3126

Backport changes from gitlab-org/gitlab-ee!372

Mostly replaces several Spinach tests with RSpec Feature tests.

See merge request !4043

Don't read otp_secret_encryption_key from hardcoded path in models/user

Variable `Gitlab::Application.config.secret_key_base` is set in config/initializers/secret_token.rb. It's very bad practice to use hard-coded paths inside an application and really unnecessary in this case.

Mirror of https://github.com/gitlabhq/gitlabhq/pull/10311

See merge request !4044

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

Added documentation on how to instrument methods

This will hopefully remove me as a single point of failure when it comes to adding instrumentation.

cc @axil @rspeicher 

See merge request !4035

Use the proper GitLab URL for links in Wiki

Fixes gitlab-org/gitlab-ce#17071

wiki links are proper compiled, e.g.
```
[same-level](same-level) -> <a href="same-level">same-level</a>
[sub-level](sub/level) -> <a href="sub/level">sub-level</a>
[upper-level](../upper-level) -> <a href="../upper-level">upper-level</a>
```

See merge request !4026

Remove `wall_enabled` field from Project



See merge request !4089

Improve multiple branch push performance by memoizing permission checking

See merge request !4091

Pass trusted_proxies to action_dispatch as IPAddrs instead of strings

Without this setting your own trusted_proxies does not work.

Fixes an issue introduce in: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3524

Fixes: https://gitlab.com/gitlab-org/gitlab-ce/issues/17004

See merge request !3970

If you attempt to push thousands of branches at once, the 60-second timeout
will occur because GitAccess checking does a lot of work to check if the
user has permission to push to a branch. This changes does two things:

1. Instead of making 1 DB query per branch push, use a memoized list of protected branches to check
2. Memoize what permissions the user has to perform on this project

On a test of 10,000 branch pushes, this prevents gitlab-shell from hitting the 60-second
timeout.

Closes #17225

Escape HTML in commit titles in system note messages

Closes #17348

See merge request !4084

Fix build notification on merge request page change even if the build status didn't change

## What does this MR do?
This MR contains a bugfix for #17357 which was introduced by !3998. The notification are now only shown on status changes, and not when switching between different merge requests.

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

## Why was this MR needed?
Because auf a bug introduced in !3998.

## What are the relevant issue numbers?
#17357

Closes #17357

See merge request !4086