Adds a sidebar to the computer and turtle GUI. This currently provides
- A power indicator, which turns on/shuts down a computer.
- Button to queue a "terminate" event
using "optipng -o7 -strip all". I ran this a few years ago and had some
issues, but aren't seeing any problems now. I don't know if this is a
graphics card change, or just optipng fixed some bugs.
These are fairly minimal changes, but hopefully save a few bytes!
- Languages are converted to JSON
- Rename most *(_advanced) blocks to *_{advanced,normal}. It's more
verbose, but means they're sorted together.
- A couple of changes to the ROM to work with some Java changes.
- Update recipes and advancements to not use damage values.
Jonathan Coates