Merged the "init-db" console command to the Flask application initialization in the test site, to simplify the code.

tests/test_currency.py

@@ -71,10 +71,8 @@ class CurrencyTestCase(unittest.TestCase):
         runner: FlaskCliRunner = self.app.test_cli_runner()
         with self.app.app_context():
             from accounting.models import Currency, CurrencyL10n
-            result: Result
-            result = runner.invoke(args="init-db")
-            self.assertEqual(result.exit_code, 0)
-            result = runner.invoke(args=["accounting-init-db", "-u", "editor"])
+            result: Result = runner.invoke(
+                args=["accounting-init-db", "-u", "editor"])
             self.assertEqual(result.exit_code, 0)
             CurrencyL10n.query.delete()
             Currency.query.delete()