Reset buttons/links on the reset password page

Update installation.md

Updated instructions to include proper stable. Otherwise they fail due to Rack extensions required below.

Fix for issue #5431

If you enable GitLab CI for project you will be able to clone project
source code with next command:
git clone http://gitlab-ci-token:XXXXXXXXXXXX@host:project.git
Requires for GitLab CI 4.0

Added git command to change shell to 1.1.0 to make sure the check passes

Non-logic wording and grammar for the new group view

Made stop message make more sense, app_root now uses the user name.

Typo fixed

Expand refs constraints to include valid characters

Fixes #4831, #4865, #4932

"ssending" to "sending"

fixed maximum avatar size in changelog

More label fixes

Show branches list (which branches contains commit) on commit page

Print the configured GitLab user on the Admin-Sidekiq page

Show only processes owned by the GitLab user on the Admin-Sidekiq page

Remove text-shadow from code blocks for all themes