disable 'new account' in old wallets

gui/gui_classic.py

@@ -325,6 +325,8 @@ class ElectrumWindow(QMainWindow):
         else:
             self.account_selector.hide()
 
+        self.new_account.setEnabled(self.wallet.seed_version>4)
+
         self.update_lock_icon()
         self.update_buttons_on_seed()
         self.update_console()
@@ -426,8 +428,8 @@ class ElectrumWindow(QMainWindow):
         new_contact = wallet_menu.addAction(_("&New contact"))
         new_contact.triggered.connect(self.new_contact_dialog)
 
-        new_account = wallet_menu.addAction(_("&New account"))
+        self.new_account = wallet_menu.addAction(_("&New account"))
-        new_account.triggered.connect(self.new_account_dialog)
+        self.new_account.triggered.connect(self.new_account_dialog)
 
         import_menu = menubar.addMenu(_("&Import"))
         in_labels = import_menu.addAction(_("&Labels"))

lib/wallet.py

@@ -370,7 +370,6 @@ class Wallet:
 
 
     def create_old_account(self):
-        print self.seed
         mpk = OldAccount.mpk_from_seed(self.seed)
         self.storage.put('master_public_key', mpk, True)
         self.accounts[0] = OldAccount({'mpk':mpk, 0:[], 1:[]})