A bunch of usability issues with the GUI

Manage nodes -> Detailed Status

1. If node ID is 0 or a negative integer, we get this error (should be something more understandable):

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
File /pfs/data5/home/kit/scc/jk7683/vre-middleware/src/virtmat/middleware/engine/wfengine_jupyter.py:599, in WFEnginejupyter.status_detailed_button_clicked(self, bvar)
    597 clear_consoleoutput()
    598 with output_status_button:
--> 599     display(JSON(self.wfe.status_detail(firework_id.value)))

File /pfs/data5/home/kit/scc/jk7683/vre-middleware/src/virtmat/middleware/engine/wfengine.py:170, in WFEngine.status_detail(self, *fw_ids)
    168 projection = {'_id': False}
    169 fw_dict = self.launchpad.fireworks.find_one(fw_query, projection)
--> 170 fw_dict['launches'] = get_launches(fw_dict['launches'])
    171 fw_dict['archived_launches'] = get_launches(fw_dict['archived_launches'])
    172 fw_list.append(fw_dict)

TypeError: 'NoneType' object is not subscriptable

2. Even when node not in the engine, its status is shown for example "the default" id 1 - there should be no default id and the status should not be shown if the node is not managed in the engine.

3. If the id is invalid a huge error with trace is shown - we need only the message!

4. Status in "Manage workflows" and Status in "Manage nodes" should be different

5. Change the "fw id" input label to "node ID"

"Manage engine" -> "Save engine"

If no file is selected this error occurs:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
File /pfs/data5/home/kit/scc/jk7683/vre-middleware/src/virtmat/middleware/engine/wfengine_jupyter.py:468, in dump_engine_button_clicked(self, bvar)
    466 clear_output()
    467 if self.wfe:
--> 468     try:
    469         self.wfe.to_file(filename=engine_file.value)
    470     except (FileNotFoundError, IsADirectoryError) as error:

File /pfs/data5/home/kit/scc/jk7683/vre-middleware/jupyter-tensorflow-2022-12-05/lib64/python3.8/site-packages/fireworks/utilities/fw_serializers.py:272, in FWSerializable.to_file(self, filename, f_format, **kwargs)
    264 """
    265 Write a serialization of this object to a file.
    266 
   (...)
    269     f_format (str): serialization format, default checks the filename extension
    270 """
    271 if f_format is None:
--> 272     f_format = filename.split(".")[-1]
    273 with open(filename, "w", **ENCODING_PARAMS) as f:
    274     f.write(self.to_format(f_format=f_format, **kwargs))

AttributeError: 'NoneType' object has no attribute 'split'

"Manage engine" -> "Load engine"

If no name is set this error occurs:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
File /pfs/data5/home/kit/scc/jk7683/vre-middleware/src/virtmat/middleware/engine/wfengine_jupyter.py:448, in WFEnginejupyter.resume_engine_button_clicked(self, bvar)
    446 eng_class = WFEngineRemote if remote_cluster.value else WFEngine
    447 try:
--> 448     self.wfe = eng_class.from_file(filename=engine_file.value)
    449 except (FileNotFoundError, IsADirectoryError) as error:
    450     print('Specify a valid engine filename or path.')

File /pfs/data5/home/kit/scc/jk7683/vre-middleware/jupyter-tensorflow-2022-12-05/lib64/python3.8/site-packages/fireworks/utilities/fw_serializers.py:289, in FWSerializable.from_file(cls, filename, f_format)
    278 """
    279 Load a serialization of this object from a file.
    280 
   (...)
    286     FWSerializable
    287 """
    288 if f_format is None:
--> 289     f_format = filename.split(".")[-1]
    290 with open(filename, "r", **ENCODING_PARAMS) as f:
    291     return cls.from_format(f.read(), f_format=f_format)

AttributeError: 'NoneType' object has no attribute 'split'