Logging improvements for the Python code

[md8n]

Description

Literally just logging improvements for the Python/Flask code to make the mesages clearly show where they are coming from.

Plus, a pre-emptive addition to .gitignore for node and a better initialization of UIProcessor.py

... and that's all ...

[Orob-Maslow]

Logging in the browser or in the log.txt file? I don't see anything other than the error on the console saying socketio is a problem:
The client is using an unsupported version of the Socket.IO or Engine.IO protocols (further occurrences of this error will be logged with level INFO)

and it matches the web site error

but the menus don't work, so not sure if this is what you wanted to pull in as a PR, but I hesitate because it does not function. Using chrome on 20.04 ubuntu.

[md8n]

Logging in the browser or in the log.txt file? I don't see anything other than the error on the console saying socketio is a problem: The client is using an unsupported version of the Socket.IO or Engine.IO protocols (further occurrences of this error will be logged with level INFO)

and it matches the web site error

but the menus don't work, so not sure if this is what you wanted to pull in as a PR, but I hesitate because it does not function. Using chrome on 20.04 ubuntu.

Correct it doesn't work - but unfortunately neither does the master branch at this moment, because my earlier :pr: that bumped all of the python dependencies got merged in before I realised that I hadn't updated the matching javascript dependencies