Replace the stock GitLab CE login greeting.

devise.html.haml

/ The template for the GitLab CE login page is located here:
/ /opt/gitlab/embedded/service/gitlab-rails/app/views/layouts/devise.html.haml
/
/ The CE admin console lets you only add markdown content to the login page.
/ This mod will let you replace it instead.  If there is no addition, it will 
/ display the standard CE greeting.  Updates may clobber this file.
/
/ After updating it:  gitlab-ctl reconfigure && gitlab-ctl restart

!!! 5
%html{ lang: "en"}
  = render "layouts/head"
  %body.ui_mars.login-page.application
    = render "layouts/broadcast"
    = render "layouts/public_head_panel", title: ''
    .container.navless-container
      .content
        = render "layouts/flash"
        .row.prepend-top-20
          .col-sm-5.pull-right
            = yield
          .col-sm-7.brand-holder.pull-left
            - if extra_sign_in_text.present?
              = markdown(extra_sign_in_text)
            - else
              %h1
                = brand_title
              %h3 Open source software to collaborate on code

              %p
                Manage git repositories with fine grained access controls that keep your code secure.
                Perform code reviews and enhance collaboration with merge requests.
                Each project can also have an issue tracker and a wiki.


    %hr
    .container
      .footer-links
        = link_to "Explore", explore_root_path
        = link_to "Documentation", "http://doc.gitlab.com/"
        = link_to "About GitLab", "https://about.gitlab.com/"