Be smarter about parsing output for tally

[seblyng]

Currently, the way we recognises if a day is implemented or not is if we find the output from the time function in the template.

This will fail if anything else is printed to stdout as we assumes it's the first and second line of the output.

I think we can be smarter about this and still recognise the days as implemented even if there is some other prints here and there in the output

[sivertjoe]

Yeah, I thought about checking the exit code, but I must have forgotten. Anyways yeah you're right, just check the exit code of the day to test whether its implemented or not