primstar 0.9.16-git

Added Primstar theme installer. This is the theme I use for the Primstar screenshots. It's available under the Scripts Window in scripts - Themes - Primstar. You can save your default blend file if you want this theme to always appear in user preferences, or just run the script when needed.

Warning lights have been made theme safe, so the fields shouldn't just go black anymore.

Fix for popup menu cancelling.