handle pending and imported accounts using account child classes
fix: pending accounts
fix: imported_account
fix #676
remove dead code: get_imported_balance
imported_keys and accounts
return imported addresses as sorted
id of imported account
move private key methods from wallet to accounts
fix: get_seed
utf8 encoding for seed encryption
fix #444
utf8 encode seed (old wallets)
rename command dumpprivkey as getprivatekeys
dumpprivkey -> getprivatekeys
sleep inside for loop, so that gui remains responsive
make do_export_privkey non-gui
address_field in sweep dialog
fix: is_address, is_private_key: check that text is not empty
export as json or csv