Improve typing of long code lines

[ChristofferHolmesland]

If a line is longer than the screen at the moment then only one character is shown at a time when you type the last visible character. It would be better if there was a setting where people could pick

1. Enable line wrapping
2. Or, show multiple characters at a time

[ChristofferHolmesland]

Added setting that lets user pick how many characters they want to scroll