Merge branch '24133-custom-signin-text-alignment' into 'master'

Add custom text to column

Before:   
![Screen_Shot_2016-11-03_at_9.46.27_AM](/uploads/ba26761b1e1a5af30b19aac88c0060a1/Screen_Shot_2016-11-03_at_9.46.27_AM.png)
After:   
![Screen_Shot_2016-11-03_at_9.46.20_AM](/uploads/a959a30a3e11ab64bb1412e662692f2b/Screen_Shot_2016-11-03_at_9.46.20_AM.png)



Closes #24133

See merge request !7269

app/views/layouts/devise.html.haml

@@ -26,8 +26,8 @@
                   Perform code reviews and enhance collaboration with merge requests.
                   Each project can also have an issue tracker and a wiki.
-            - if current_application_settings.sign_in_text.present?
-              = markdown_field(current_application_settings, :sign_in_text)
+              - if current_application_settings.sign_in_text.present?
+                = markdown_field(current_application_settings, :sign_in_text)
       %hr.footer-fixed
       .container.footer-container