Fix bounds check when issuing asset
Queue correct delegate registration fee for release

Add code to calculate and return correct delegate fee registration, but
leave it disabled until we update the blockchain version to >104
Add delegate pay rate to get_info
Schedule update to delegate and asset registration fees

See also e69e24a9d7f6511745a87440adf24c0130fe5bba
Don't re-open wallet if it's already open

If user runs wallet_open on the wallet he currently has open, do
nothing.
Merge branch 'master' of github.com:BitShares/bitshares_toolkit