update themes.json and fix inconsistent eCash key (all using eCash now)
we should make a theme tool that extracts all archives into their own subdirectories, manages updating version numbers, displays the list of coins, the themes, and their images, and allows you to drag-and-drop files (if necessary ... or why not just automate that?) to ship new coin updates to all the theme servers
update: no we shouldn't, but there are some scripts available on the scripts branch for next time.
