Fix is_valid_account_name

Previous version was too simple, and let some invalid names slip
through; for example, "a." was considered a valid name.
Implement updating a child account as a parent

Parents can update their children's accounts; however, creating such a
transaction was not previously supported. Now it is.
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Add fix that should've been in last commit
Fix delegate pay share supply update calculation
Add simple script that changes floating points in genesis.json to ints
More pretty_printing in get_info
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Bump qt_wallet
Fix some crashes when rebuilding index
Fix history fee recalculation
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Update fc submodule
Merge branch 'develop' of https://github.com/BitShares/bitshares_toolkit into develop
Keep balance records forever so wallet rescans don't fail
We should do this a better way at some point
Add aliases for debug commands
Close #476

Anonymous/pseudonymous sending now shows up nicely in the pretty-
fix rapid disconnect/reconnect bug
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop