Stelle Fehlerseiten auf 38c3 Design um

src/plainui/static/error_pages/403.html

src/plainui/static/error_pages/403.svg

src/plainui/static/error_pages/404.html

src/plainui/static/error_pages/404.svg

src/plainui/static/error_pages/500.html

src/plainui/static/error_pages/500.svg

src/plainui/templates/403.html

src/plainui/templates/404.html

src/plainui/templates/500.html