Raspberry Pi 2 model B / 1 B+ snap-together case

This is a subtle remix of the modular Raspberry Pi 2 Model B / 1 Model B+ case by aurelius.
The only difference is that the tabs have little snap mounts in them, which makes the top and base snap together nicely so the case won't come apart easily.
I also added a variation on the plain top part that has holes at the sides, for those concerned about ventilation.
And to make it slightly easier to pull out the microSD card, there is an alternative base model (v2) that has a slight recess around