move invokeai.db to ~/invokeai/databases

- The invokeai.db database file has now been moved into
  `INVOKEAIROOT/databases`. Using plural here for possible
  future with more than one database file.

- Removed a few dangling debug messages that appeared during
  testing.

- Rebuilt frontend to test web.

invokeai/backend/util/logging.py

@@ -194,7 +194,6 @@ class InvokeAILogger(object):
     @classmethod
     def getLoggers(cls, config: InvokeAIAppConfig) -> list[logging.Handler]:
         handler_strs = config.log_handlers
-        print(f'handler_strs={handler_strs}')
         handlers = list()
         for handler in handler_strs:
             handler_name,*args = handler.split('=',2)