wizard: option to create multisig wallet manually
restore get_master_public_key function. fixes #668
is_new_seed: encode utf8
minor fix for restore dialog
seed_dialog: setTabChangesFocus
new class: Imported_Wallet
messages for enter_seed
move set_url to __init__. fixes #672
update for gtk gui. fixes #673
move synchronizer class in its own file. abstract wallet class.
can_create_account
cleanup wallet classes
wallet.has_seed
print warning in stderr, not stdout
fix bug with has_seed
disable wallet menus when they do not apply
fix password dialog, for imported wallets
define check_password for imported wallets
parameter for wizard.run
do_export_privkeys: replace wallet.seed with is_watching_only