# traces
match '/user/:display_name/traces/tag/:tag/page/:page' => 'trace#list', :via => :get
match '/user/:display_name/traces/tag/:tag' => 'trace#list', :via => :get
# traces
match '/user/:display_name/traces/tag/:tag/page/:page' => 'trace#list', :via => :get
match '/user/:display_name/traces/tag/:tag' => 'trace#list', :via => :get