Re: Is there a Raspberry Pi (2) version?
I imagine it could run on a Pi. Might be a bit sluggish but hard to beat the price. For a faster desktop system, you can choose between an old PC that Windows won't run in (probably scroungeable for free, but will eat £30 of electricity quite soon if you leave it powered up) or a fully solid-state system based on a fanless mini-ITX board and case such as Gigabyte J1800N-D2H or its quad-core J1900 variant.
Anyway, whatever you run it on: Cinnamon - completely recommended.
In passing Cinnamon works (yum install) on Fedora 20, maybe older Fedora. And from memory, on Centos 7.