Simplify page titles.
Update navigation in 7 templates.
Update confirmation-of-delete templates.

Add delete-album functionality.
Update style.css: add class input[type="submit"].danger.
Deny deleting non-empty forum.
Add forgotten redirect in actionDelete() methods when $model->delete() fails.

Updated Album model to delete all related photos.
Updated 6 confirmation templates.
Update photo/index.php template.
Use user icon instead of arrow symbol to link to user.
Update user/index.php template.