https://www.ruby-lang.org/en/news/2013/11/22/heap-overflow-in-floating-point-parsing-cve-2013-4164/

The init script was pointing to the master branch rather than the 6-0-stable causing the rake gitlab:check to think it is out of date.

newest version of gitlab-shell avail. (has bug fix)

As a consequence on the namespaces change from 5.4 to 6.0, after upgrade
lots of links on the dashboard were not working (pointing to projects
without the group part on the url).
Also, after upgrading to 6.0-stable, the network (branch history) function
does not work. The progress bar rotates forever, but the network graph cannot
be generated.

Clearing redis cache fixes those issues.

run mysql_secure_installation to secure the freshly installed mysql server

Isn't 5.4 current stable?

This reverts commit 670e1be7.

This reverts commit b5cd66d4.

Updated the relative links in ## Contents to point to the correct documents.

Additional unicorn -> puma reference update

Updated incorrect/outdated references to unicorn.rb; changed to puma.rb