Hi jeremey,
Some aircraft don't have a picture that can be used in IF so we take a screenshot of the plane and drop it on the picture with the question mark in the aircraft page then that becomes the picture on the page. There is more about that and lots of other tips on the Support section tips pages: https://www.codelegend.com/forums/viewtopic.php?f=4&t=742&start=80#p8870
Regarding ini files with byte order marks: The latest versions of IF can actually read the BOM files normally so we do not need to worry about situations like the Milvis 350i, but since you already have a blank line on the front of the aircraft.cfg file for that aircraft it will do the same job anyway as you found.
Regards
Steve