Tips for updating CE to EE with RPMs

I got an annoying error today while trying to upgrade CE to EE on Centos.

See merge request !259

Patch release packages 7.5.3

See merge request !263

Fix Redis::InheritedError

This was hand-tested against 7.5.2-ee.

A proper solution would be to update Sidetiq to 0.6.3 or newer but
that requires first upgrading Sidekiq to 3.x.

See merge request !260

752 pkgs

See merge request !257

Rebase on merge request

Introduces merge request option to rebase before merging.

Issue #185

See merge request !254

Ui improvements for events table

UI improvements as per comments by @dzaporozhets in https://dev.gitlab.org/gitlab/gitlab-ee/merge_requests/250

See merge request !256

Ldap cache and synchronization documentation

Fixes #180

/cc @jacobvosmaer @valery

See merge request !255

Add comments around code to make it easier to understand, move remove_branch code into a separate method.

Add daily sync explanation from release blog post

See merge request !253

Subscriber info

fixes part of https://dev.gitlab.org/gitlab/organization/issues/82

See merge request !252

Better message for failed pushes because of git hooks

https://dev.gitlab.org/gitlab/gitlab-ee/issues/119

See merge request !242

Audit event documentation

See merge request !251

Audit feature / permission changes in log

Audit events for membership changes of the group and project.

See merge request !250