Merge branch '35952-keep-group-settings-open-after-submit' into 'master'

Keep group settings sections expanded after submitting form

See merge request gitlab-org/gitlab-ce!21083

app/controllers/groups_controller.rb

@@ -85,7 +85,7 @@ class GroupsController < Groups::ApplicationController
 
   def update
     if Groups::UpdateService.new(@group, current_user, group_params).execute
-      redirect_to edit_group_path(@group), notice: "Group '#{@group.name}' was successfully updated."
+      redirect_to edit_group_path(@group, anchor: params[:update_section]), notice: "Group '#{@group.name}' was successfully updated."
     else
       @group.restore_path!
 

app/views/groups/settings/_general.html.haml

 = form_for @group, html: { multipart: true, class: 'gl-show-field-errors' }, authenticity_token: true do |f|
+  %input{ type: 'hidden', name: 'update_section', value: 'js-general-settings' }
   = form_errors(@group)
 
   %fieldset

app/views/groups/settings/_permissions.html.haml

 = form_for @group, html: { multipart: true, class: 'gl-show-field-errors' }, authenticity_token: true do |f|
+  %input{ type: 'hidden', name: 'update_section', value: 'js-permissions-settings' }
   = form_errors(@group)
 
   %fieldset