*: update... this commit: 1. consolidates dark theme stuff to dark_theme.cpp 2. creates a new widgets folder to store all of our custom widgets 3. creates the list settings page in the information dialog, although much of it is nonfunctional: it doesn't save, and the status doesn't even get filled in... we'll fix this later!

# Icons
These icons are from Yusuke Kamiyamane's [[Fugue Icons]](https://p.yusukekamiyamane.com/) pack. The original files have been left intact alongside bin2h variants (for easy inclusion in source code).