Add cosigner index to AddressIndex
Change PublicKeyRing index to array of AddressIndex
Create indexes for all copayers
PublicKeyRing handles one index for each cosigner
Hide empty addresses from othe copayers
Add update indexes and support old indexes schema
bump version
Add some test and refactor getCosigner
change import to fix index.html tests
Remove magic number fixes #736
Merge pull request #816 from yemel/feature/bipNNN-refactor

Feature/bip nnn refactor