User experience: Window titles

[roberthadow]

Choose and use consistently two short names for the Xnec2c windows. "Main" and "Editor" are two possibilities. "Xnec2c Console" and "Xnec2c Editor" are also possibilities.

Display the file name or first line of comment (CM) in the window title bar for both windows. If the string is too long, devise a clever means to truncate it.

This will help the (new) user relate the documentation to the application.