fixes issue when user is not logged in but viewing public project

app/helpers/projects_helper.rb

@@ -54,13 +54,15 @@ module ProjectsHelper
         link_to(simple_sanitize(owner.name), user_path(owner))
       end
 
-    all_projects = current_user.authorized_projects.sorted_by_activity.non_archived
+    all_projects = current_user.authorized_projects.sorted_by_activity.non_archived if current_user
 
-    project_link = link_to project_path(project), {class: "project-item-select-holder js-projects-dropdown-toggle"} do
+    project_link = link_to project_path(project), {class: "project-item-select-holder #{"js-projects-dropdown-toggle" if current_user}"} do
       link_output = simple_sanitize(project.name)
-      link_output += content_tag :span, nil, {class: "fa fa-chevron-down dropdown-toggle-caret"}
+      link_output += content_tag :span, nil, {class: "fa fa-chevron-down dropdown-toggle-caret"} if current_user
 
-      link_output += project_select_tag :project_path, class: "project-item-select js-projects-dropdown", data: { include_groups: false }
+      link_output += project_select_tag :project_path, class: "project-item-select js-projects-dropdown", data: { include_groups: false } if current_user
+
+      link_output
     end
 
     full_title = namespace_link + ' / ' + project_link