Database: use schema_version and application_id

wgmaster/import.py

@@ -117,6 +117,7 @@ def main() -> None:
             with open(file_name, encoding='utf-8') as sql_file:
                 print(f'Executing {file_name}')
                 cnx.executescript(sql_file.read())
+    ver = cnx.execute("PRAGMA schema_version").fetchall()[0][0]
 
     try:
         cnx.isolation_level = None
@@ -129,6 +130,7 @@ def main() -> None:
             raise RuntimeError('foreign key constraint failed')
         cnx.execute("COMMIT")
         cnx.execute("VACUUM")
+        cnx.execute(f"PRAGMA schema_version = {ver}")
     except Exception as err:
         cnx.execute("ROLLBACK")
         raise err