Update src/includes/jsonrpc.inc

Fix array treatment for sendmany
Update src/bitcoin.inc

Sendmany function
Check for invalid characters when base58-decoding.
Merge pull request #1 from psyvisions/master

Correction 1/2
Fix getbalance method. Allow empty string (default account).
minor / no new line at end of file
Fix move method. Allow moving coins to default account (empty string).
Add listtransactions and listaccounts methods
Fix PHP warnings "Converting from  to : not supported..."
Merge pull request #12 from sam2kb/master

Latest fixes and improvements