Invalid entry added to log ((de)serialize payloads causing sig verif error)

[zachferland]

Follow up on https://github.com/3box/3box-js/issues/524

Issue was fixed so that no more new accounts would have the issue. But there was three days that the issue was live, and any new accounts (only new in the dapp) created during those days will still have the error. 2 parts to follow up on

1. handle that error differently (don't have blocking modal in dapp), entries will still load (besides invalid one), but going to confirm that is true (if not, handling may have to change in orbitdb)
2. probably a fix in orbit, shouldn't be able to create invalid sigs/entries just based on what is in the payload, or should stop it from being added in the first place (have not verified exactly how this is handled in orbitdb code that caused this)