ENH: Added CLI output display to module widget
Problem: It is often difficult to find out why a CLI failed or get detailed output. (user would need to open the log window and find the messages in the log, but most users don't even know that there is a log window).
Solution: Expand button is added next to the status message. User can click there to show/hide all details. Error output is displayed in red, at the top. Standard output is displayed black. Window is automatically sized to show all content with minimal need for scrolling.