I'm pretty happy my girls are well past the Barbie movie/book stage, but as a male, who is teaching his daughters to program at the ages of 10 and 8 (started earlier) I'm also experiencing a range of emotions over this that go from hilariously mad to defeatedly outraged. Barbie, you are quite the role model indeed.
Code.org has a fun little, block based, hour long walk through for your daughters (and sons) who like Disneyâ€™s Frozen. Do you want to build some programs?
A QuickLook plugin that lets you view plain text files without a file extension. It also allowed me to preview some plain text files with file extension that previously where not viewable, like .css, .json, .htaccess, etc.
After you unpack and place the downloaded plugin in your /Library/QuickLook folder, you may need to restart Finder to be able to start using it. Unfortunately, the project is unmaintained, but plugin is still working just fine.