Preparing for the filesize enhancement
Used a modified version of `dev/buildcache/buildcache.lua` to generate a new version of the games.json that contains the file sizes of the .love files. I then pushed it through http://jsonformatter.curiousconcept.com/ to make it pretty.

I also changed UBO's name to have the abbreviation in the description.
Adding the sizes table to the docs for game objects
adding file size information in UI
Unternifyiny the description generation so that it's clearer
adding round as it is now used in the UI