Settings: Move some icons

[Taitava]

This is how a shell command's icons currently looks like in the settings (0.14.0):

I'd like to move the Delete and Execute now icons. This would be the result:

The reason for this change is that it would make the top row only contain icons that open up a modal that displays more settings. It would be easier to see which icons are related to the modal and which are not. The bottom row can then contain icons that perform other actions.