feat: add account data revalidation after undelegation#481

Jipperism wants to merge 2 commits intomainlivepeer/explorer:mainfrom

bugfix/192-no-option-to-redelegate-LPT-after-undelegatinglivepeer/explorer:bugfix/192-no-option-to-redelegate-LPT-after-undelegatingCopy head branch name to clipboard