Improve the logging

The logging of the base should be improved in the way that it better uses the flexibility of the logger, so it uses the log levels in a more accurate way. As for now, `lcd_controller` traces every time it has an incoming signal and some high level debugging is missing in order to filter out necessary and unnecessary information.

Further refine this task and add subtasks as needed:
- [ ] #31
- [x] #32
- [ ] #48
- [x] #52

Start by reading the lcd_controller logging mentioned in the issue and review subtasks #31, #32, #48, and #52 to determine the remaining scope. The work is done when incoming-signal traces use appropriate log levels and high-level debugging can filter necessary from unnecessary information.

Written by the indexing model from the issue text.