Renamed MEGAQC_DEBUG to FLASK_DEBUG and tidied config profiles

[ewels]

This is quite a simple change (it's all I can manage), but hopefully makes the different config profiles a little clearer.

• Got rid of MEGAQC_DEBUG - it seems that FLASK_DEBUG has a bunch of built-in stuff that is difficult to get around, so may as well have just one env var instead of two
• Improved logging a bit to try and make stuff clearer.

I did this because it annoyed me that most of the debug options weren't working with only MEGAQC_DEBUG set.

I had also hoped to hide the debug sidebar thing in the testing mode, but I can't figure this out and it's time to go to bed now.

[tsnowlan]

Looks good to me

[ewels]

I'm thinking that it could be good to change the logic a little actually, so that you can still run in debug mode with a production server if you want...

[ewels]

Ok, I left the logic as it is. I guess if you want to run in debug mode you can still have the server settings in place so it should still work I think? 🤔

I did add one more change though - using megaqc.db as the sqlite database name instead of dev.db and test.db. Figured it made more sense to not switch database when running in different modes, and the new name is more intuitive.

[ewels]

ok cool, I think this is working as expected for me now 👍

[ewels]

I had also hoped to hide the debug sidebar thing in the testing mode, but I can't figure this out and it's time to go to bed now.

Today with a clear head and less whisky this is already working exactly as I hoped. Not sure why it wasn't doing what I was expecting last night... All good anyway! 🎉