Codestyle changes to make sure we have space around operators (EE)

This will introduce fixes for gitlab-org/gitlab-ce#17398 so after
gitlab-org/gitlab-ce!4112 gets merged and CE synced to EE, we don't
have failing builds.

See merge request !388

Updated EE CHANGELOG for 8.7.5

See merge request !395

[ci skip]

Fix skipping pages when restoring backups

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/407

See merge request !375

Prepare update guide for 8.8

See merge request !391

Reduce emails-on-push HTML size by using a simple monospace font

With this simple change we reduce the size dramatically by reducing every inlined CSS instance of this:

font-family: 'Menlo', 'Liberation Mono', 'Consolas', 'DejaVu Sans Mono', 'Ubuntu Mono', 'Courier New', 'andale mono', 'lucida console', monospace"

to this:

font-family: monospace

Before:

![image](/uploads/6ce445102dfe5bfcdf9cf3479218b0ad/image.png)

After:

![image](/uploads/8e3a4216815986543ece75483d7f9063/image.png)

Helps gitlab-org/gitlab-ce#15178

See merge request !384

Updated EE CHANGELOG per 8-7-stable-ee

See merge request !390

[ci skip]

Fix LDAP access level spillover bug

See merge request !499

ES: Refactoring

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/516

See merge request !365

Mask credentials in URLs instead of remove them

REF: #447 

REF: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/382#note_11713978

See merge request !385

Also refactored Project#safe_import_url

With this simple change we reduce the size dramatically by reducing every instance of this:

font-family: 'Menlo', 'Liberation Mono', 'Consolas', 'DejaVu Sans Mono', 'Ubuntu Mono', 'Courier New', 'andale mono', 'lucida console', monospace"

to this:

font-family: monospace

Helps #15178

Don't expose URL credentials in errors generated by Mirror sync.

REF: #447 

See merge request !382

Fix typo



See merge request !379

* I introduced the new UrlSanitizer class which can help us to protect
credentials used in URLs.
* Renames `.process` class method to `.sanitize`

With this fix we remove the credentials from the repo URLs that are shown when
there is an internal error with Git

ES: Add more rake tasks



See merge request !381

Update elasticsearch.md with more details

Added info for running the index for all available indexes and clarification about how the process keep ElasticSearch up-to-date

See merge request !369

Add sort by weight in issuable filter

Fixes #537 

See merge request !378

ES: More efficient snippets search

https://gitlab.com/gitlab-org/gitlab-ee/issues/375

See merge request !371

CE upstream



See merge request !377

Delete ProjectImportData record only if Project is not a mirror.

This fix ensure we always use the full import URL when syncing the
mirror.

REF: https://gitlab.com/gitlab-org/gitlab-ce/issues/17065

See merge request !370