Move signup_enabled and signin_enabled back

This partially reverts b5543be19d by restoring the nesting
for the signup_enabled and signin_enabled attributes.

config/gitlab.yml.example

@@ -49,6 +49,16 @@ production: &base
     ##   COLOR  = 5
     # default_theme: 2 # default: 2
 
+    ## Users can create accounts
+    # This also allows normal users to sign up for accounts themselves
+    # default: false - By default GitLab administrators must create all new accounts
+    # signup_enabled: true
+
+    ## Standard login settings
+    # The standard login can be disabled to force login via LDAP
+    # default: true - If set to false the standard login form won't be shown on the sign-in page
+    # signin_enabled: false
+
     # Restrict setting visibility levels for non-admin users.
     # The default is to allow all levels.
     #restricted_visibility_levels: [ "public" ]
@@ -112,16 +122,6 @@ production: &base
   # 2. Auth settings
   # ==========================
 
-  ## Users can create accounts
-  # This also allows normal users to sign up for accounts themselves
-  # default: false - By default GitLab administrators must create all new accounts
-  # signup_enabled: true
-
-  ## Standard login settings
-  # The standard login can be disabled to force login via LDAP
-  # default: true - If set to false the standard login form won't be shown on the sign-in page
-  # signin_enabled: false
-
   ## LDAP settings
   # You can inspect a sample of the LDAP users with login access by running:
   #   bundle exec rake gitlab:ldap:check RAILS_ENV=production