added before_filter :require_login via sorcery to application_controller.rb
added skip_before_filter :require_login via sorcery to blog_articles_controller.rb
edited blog_Article views not to clas with permissions
added skip_before_filter :require_login via sorcery on letters_controller.rb
edited letter views not to clash with permissions
added skip_before_filter :require_login to users_controller.rb via sorcery
removed unused views from users