Move share lock setting and tweak UI

app/views/groups/edit.html.haml

@@ -28,17 +28,20 @@
         .col-sm-offset-2.col-sm-10
           = render 'shared/allow_request_access', form: f
 
-      = render 'group_admin_settings', f: f
-
       .form-group
-        %hr
-        = f.label :share_with_group_lock, class: 'control-label' do
-          Share with group lock
+        = f.label :share_with_group_lock, 'Share lock', class: 'control-label'
         .col-sm-10
           .checkbox
+            = f.label :share_with_group_lock do
               = f.check_box :share_with_group_lock
-            %span.descr Prevent sharing a project with another group within this group
+              %strong
+                Prevent sharing a project within
+                = @group.name
+                with other groups
+              %br/
+              %span.descr This setting will be applied to all subgroups unless overridden by a group owner
 
+      = render 'group_admin_settings', f: f
 
       .form-actions
         = f.submit 'Save group', class: "btn btn-save"