Add missing locales and fix access to public pages

app/controllers/internal_users_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class InternalUsersController < ApplicationController
   include CommonBehavior
 
@@ -5,7 +7,7 @@ class InternalUsersController < ApplicationController
   before_action :require_reset_password_token, only: :reset_password
   before_action :set_user, only: MEMBER_ACTIONS
   skip_before_action :verify_authenticity_token, only: :activate
-  skip_after_action :verify_authorized, only: [:activate, :forgot_password, :reset_password]
+  after_action :verify_authorized, except: %i[activate forgot_password reset_password]
 
   def activate
     set_up_password if request.patch? || request.put?
@@ -48,8 +50,7 @@ class InternalUsersController < ApplicationController
     destroy_and_respond(object: @user)
   end
 
-  def edit
-  end
+  def edit; end
 
   def forgot_password
     if request.get?
@@ -119,8 +120,7 @@ class InternalUsersController < ApplicationController
   end
   private :set_user
 
-  def show
-  end
+  def show; end
 
   def update
     update_and_respond(object: @user, params: internal_user_params)

app/views/application/_breadcrumbs_and_title.html.slim

@@ -5,9 +5,9 @@
     - if object
       - current_element = object
   - else
-    - root_element = link_to_if(policy(model).index?, model.model_name.human(count: 2), send(:"#{model.model_name.collection}_path"))
+    - root_element = link_to_if(@current_user && policy(model).index?, model.model_name.human(count: 2), send(:"#{model.model_name.collection}_path"))
     - if object
-      - current_element = link_to_if(policy(object).show?, object, send(:"#{model.model_name.singular}_path", object))
+      - current_element = link_to_if(@current_user && policy(object).show?, object, send(:"#{model.model_name.singular}_path", object))
   - if I18n.translation_present?("shared.#{params[:action]}")
     - active_action = t("shared.#{params[:action]}")
   - else

app/views/exercises/external_users/statistics.html.slim

@@ -1,4 +1,4 @@
-h1 = "#{@exercise} (external user #{@external_user})"
+h1 = "#{@exercise} (external user #{link_to_if(policy(@external_user).show?, @external_user.displayname, @external_user)})"
 - current_submission = @submissions.first
 - if current_submission
   - initial_files = current_submission.files.to_a