* allow for duplicate signed submissions * Fix a bunch of things, seems all good now * fmt * Fix * Update frame/election-provider-multi-phase/src/signed.rs Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com> * Update frame/election-provider-multi-phase/src/signed.rs Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com> * add migratin * fmt * comment typo * some review comments * fix bench Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com> Co-authored-by: Ross Bulat <ross@parity.io>