[webui] Redirect to Kiwi Editor from image templates

It will redirect the user to the Kiwi Editor if the branched
package is an image template

src/api/app/controllers/webui/package_controller.rb

@@ -557,8 +557,14 @@ def branch
                                 targetproject: created_project_name, targetpackage: created_package_name,
                                 user: User.current.login)
 
-    flash[:notice] = 'Successfully branched package'
-    redirect_to(package_show_path(project: created_project_name, package: created_package_name))
+    branched_package_object = Package.find_by_project_and_name(created_project_name, created_package_name)
+
+    if request.env["HTTP_REFERER"] == image_templates_url && branched_package_object.kiwi_image?
+      redirect_to(import_kiwi_image_path(branched_package_object.id))
+    else
+      flash[:notice] = 'Successfully branched package'
+      redirect_to(package_show_path(project: created_project_name, package: created_package_name))
+    end
 
   rescue BranchPackage::DoubleBranchPackageError => exception
     flash[:notice] = 'You have already branched this package'

src/api/spec/features/webui/image_templates_spec.rb

@@ -32,6 +32,7 @@
       fill_in 'target_package', with: "custom_name"
 
       click_button("Create appliance")
+      find('#package_tabs')
       expect(page).to have_text("Successfully branched package")
       expect(page).to have_text("home:tom:branches:my_project > custom_name")
     end