Enable Rubocop Casecmp Performance Cop.

Also fixes the errors caused by enabling the cop.

`casecmp` is more performant than `.downcase` and `==`.

See also: https://github.com/bbatsov/rubocop/blob/master/lib/rubocop/cop/performance/casecmp.rb

See merge request !3957

Enable the StringReplacement cop.

Also fix one use of `gsub` that would be faster as `delete`.

Use `tr` instead of `gsub` when you are replacing the same number of characters. Use `delete` instead of `gsub` when you are deleting characters.

See merge request !3960

Removes jquery-scrollto-rails.

Instead the script is now included directly from the vendor directory.

Resolves #17166. Working towards #14286 and merging !3775.

The gem was on 1.4.3.1, here's the diff between that tag and 2.1.2 (the version I'm using in this MR): https://github.com/flesler/jquery.scrollTo/compare/1.4.3...2.1.2

There aren't any notable breaking changes that I noticed, and I didn't see any JS errors after testing a bunch of pages.

cc: @jschatz1 

See merge request !4088

Also fix one use of `gsub` that would be faster as `delete`.

Use `tr` instead of `gsub` when you are replacing the same number of
characters. Use `delete` instead of `gsub` when you are deleting
characters.

Instead the script is now included directly from the vendor directory.

Resolves #17166.

Also fixes the errors caused by enabling the cop. casecmp is more performant than `.downcase` and `==`.

Restore "r" shortcut

Fixes "Reply with Selected Text" shortcut

See merge request !4041

Add eager load paths to help prevent dependency load issues with Sidekiq workers

_Originally opened at !3545 by @stanhu._

- - -

Relevant resources:

- https://github.com/mperham/sidekiq/wiki/FAQ#why-doesnt-sidekiq-autoload-my-rails-application-code
- https://github.com/mperham/sidekiq/issues/1281#issuecomment-27129904
- http://blog.arkency.com/2014/11/dont-forget-about-eager-load-when-extending-autoload
- https://github.com/rails/rails/blob/52ce6ece8c8f74064bb64e0a0b1ddd83092718e1/railties/lib/rails/engine.rb#L472-L479
- https://github.com/rails/rails/blob/v4.2.6/railties/lib/rails/paths.rb

Attempts to address #3661, #11896, #12769, #13521, #14131, #14589, #14759, #14825.

See merge request !3724

Update Ace Editor

Upgrading fixes scroll navigation on mobile.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/13987

![scroll](/uploads/fd655fa6033ddc0337080c89c3fbf92f/scroll.gif)

See merge request !3823

Fix an issue when filtering merge requests with more than one label

Fixes #15529.

See merge request !3886

Add to label ID to response

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/15673

See merge request !4023

Remove broken inline runner description edit form

This remove inline form for editing runnner's description.

It is broken because of missing partial / incorrect response and it also does not make much sense, since we have under 'Edit' button a form that makes it possible to edit more than just a description.

See merge request !4095

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

Fix using link to uploads in global snippets

Closes #17342, closes #17363

See merge request !4085

Closes #17342, closes #17363

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

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

Hide navbar on mobile

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._

- - -

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

- Fix naming of API::CommitStatuses
- Ensure we use require_dependency instead of require
- Ensure the namespace is right in lib/api/api.rb, otherwise, we
  might require Grape::API::Helpers which defines the `#params` method.
  This is to avoid requiring a file multiple times and getting an "Already
  initialized constant" error.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Attempts to address #13521, #14825
Signed-off-by: Rémy Coutable <remy@rymai.me>

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