1. Improve error handling while creating protected branches.

2. Modify coffeescript code so that the "Developers can *" checkboxes
   send a '1' or '0' even when using AJAX. This lets us keep the backend
   code simpler.

3. Use services for both creating and updating protected branches.
   Destruction is taken care of with `dependent: :destroy`

- And hook up their associations.

1. Remove the `developers_can_push` and `developers_can_merge` boolean
   columns.

2. Add two new tables, `protected_branches_push_access`, and
   `protected_branches_merge_access`. Each row of these 'access' tables is
   linked to a protected branch, and uses a `access_level` column to
   figure out settings for the protected branch.

3. The `access_level` column is intended to be used with rails' `enum`,
   with `:masters` at index 0 and `:developers` at index 1.

4. Doing it this way has a few advantages:

   - Cleaner path to planned EE features where a protected branch is
     accessible only by certain users or groups.

   - Rails' `enum` doesn't allow a declaration like this due to the
     duplicates. This approach doesn't have this problem.

       enum can_be_pushed_by: [:masters, :developers]
       enum can_be_merged_by: [:masters, :developers]

Change `LdapGroupSync` worker to use new Group Sync classes

This was missed before - somehow 😞 The old `group_sync` class was left and the worker still pointed to it. Unfortunately, this means that 8.11 shipped with the new modular code but it is not in use. In the interest of not introducing a possible regression, we may as well wait until 8.11. 



See merge request !601

Fix regression in Git Annex permission check

The `changes` in git-annex-shell mean a different thing than git-receive-pack. Revert to the previous code and use a simple check whether Git Annex is enabled.

See merge request !599

CE upstream



See merge request !600

Added update guide for 8.11

## What does this MR do?

I need to add notes about Elastic on EE side. To not create ugly conflicts in the future and to not duplicate work I created it here first.

I followed this guide https://gitlab.com/gitlab-org/release-tools/blob/master/doc/release-candidates.md#gitlab-ce

See merge request !5545

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

The `changes` in git-annex-shell mean a different thing than
git-receive-pack. Revert to the previous code and use a simple check
whether Git Annex is enabled.

Replace reject_blocked with reject_blocked! in skipped callbacks.

`reject_blocked!` was introduced in c9def945, I can't find any references to `reject_blocked` ever existing.

See merge request !5532

In Rails 4.2 and below, skipping callbacks (skip_before_action, skip_after_action, etc.) that use methods which do not exist will not throw any errors.

On the other hand, Rails 5 does. See https://github.com/rails/rails/pull/19029

After testing with Rails 5 I noticed there are some methods that don't actually exist (because they were renamed, usually), this fixes a few instances of those.

reject_blocked! was introduced in c9def945, I can't find any references to reject_blocked ever existing.

Submit new issues created via the WebUI or API to Akismet for spam check on public projects.

## What does this MR do?

Submit new issues created via the WebUI by non project members to Akismet for spam check.

## Why was this MR needed?

Support for Akismet was added only to the API with !2266. This MR builds on that functionality to also check issues submitted via the WebUI for spam.

## What are the relevant issue numbers?

Related to:

- #5573 
- #5932 
- gitlab-com/infrastructure#14
- gitlab-com/support#61
- !2266

cc @stanhu @MrChrisW 

See merge request !5333

Update attr_encrypted from 3.0.1 to 3.0.2

This removes methods that were deprecated by Rails 5 so we won't have as many deprecation warnings when we update to Rails 5. Working toward #14286.

Changelog: https://github.com/attr-encrypted/attr_encrypted/blob/master/CHANGELOG.md#302

See merge request !5438

Update rack-oauth2 from 1.2.1 to 1.2.3.

Removes methods deprecated in Rails 5. Working toward #14286.

Changelog: https://github.com/nov/rack-oauth2/compare/v1.2.1...v1.2.3

See merge request !5439

Upgrade Bullet from 5.0.0 to 5.2.0

Removes methods that were deprecated in Rails 5. Working toward #14286.

Changelog: https://github.com/flyerhzm/bullet/blob/master/CHANGELOG.md#520-07262016

See merge request !5443

Upgrade gon from 6.0.1 to 6.1.0.

Removes methods that were deprecated in Rails 5. Working toward #14286.

Changelog: https://github.com/gazay/gon/compare/3a2b56d...9d89bc9

See merge request !5442

Upgrade default_value_for from 3.0.1 to 3.0.2.

Includes support for Rails 5. Working toward #14286.

Changelog: https://github.com/FooBarWidget/default_value_for/compare/release-3.0.1...release-3.0.2

See merge request !5441

Fix renaming repository when name contains invalid chars under settings

Fixes #19538

See merge request !5490

Generate coverage report from whole test suite

Extends our CI plan to merge all coverage results and generate HTML report.

See merge request !5018

Allow skipping users in autocomplete

Ref: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/560

See merge request !5471

Resolve "HipChat notifications missing colors"

_Originally opened at !2322 by @eisnerd._

- - -

## What does this MR do?

This MR restores the colors mentioned in #5571 by overriding the color setting with green/red just for build events.

## What are the relevant issue numbers?

Closes #5571.

See merge request !5498

Make error pages responsive

## What does this MR do?

This MR makes error pages responsive design and all users have better experiences on 404/422/500/502/503/in-deploy error.

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

n/a

## Why was this MR needed?

404/422/500/502/503/in-deploy error pages were designed only for PC and not good for mobile users.

## What are the relevant issue numbers?

Closes #19345

## Screenshots (if relevant)

### PC
![improved-404-lg-v3](/uploads/280f48f95bd446888a81cc2150877cd8/improved-404-lg-v3.png)

### mobile

(with `max-width: 40vw` for `img` (@connorshea) and `max-width: 800px` for `hr` (@annabeldunstone) )
![improved-404-xs-v3](/uploads/9764aac3992dedb6b437045943a07fe5/improved-404-xs-v3.png)

## Does this MR meet the acceptance criteria?

- [x] [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 [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 !5000

Pass an array of user IDs in the `skip_users` param to have them
excluded from the results (unless they are explicitly included through
the `current_user` or `author_id` params).

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

CE upstream

@iamphill All these conflicts are frontend related, could you resolve/reassign them?
```
Unmerged paths:
  (use "git add <file>..." to mark resolution)

	both added:      app/assets/javascripts/application.js
	both added:      app/assets/javascripts/confirm_danger_modal.js
	both added:      app/assets/javascripts/dispatcher.js
	both added:      app/assets/javascripts/groups_select.js
	both added:      app/assets/javascripts/lib/utils/common_utils.js
	both added:      app/assets/javascripts/merge_request_widget.js
	both added:      app/assets/javascripts/notes.js
	both added:      app/assets/javascripts/project_new.js
	both added:      app/assets/javascripts/users_select.js
	both modified:   app/views/projects/branches/index.html.haml
```

See merge request !595

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

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

Resolve "Empty project page does not show Repository section on navbar after creating first branch/file"

This MR aims to fix the rendering of the project's page after creating a README/LICENSE/.gitignore and creating the first branch of the project on the website.
Pictures related with the problem this MR fixes linked in #20025

- [x] [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 [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)

Closes #20025

See merge request !5399

Project and branch cache is expired when project is still
empty or new branch is created. develops tests accordingly
Signed-off-by: Rémy Coutable <remy@rymai.me>