Aspect Ratio Identification

are we only interested in 4:3 vs 16:9, or should we identify other aspects as well

Good queston Zach. 4:3 and 16:9 are the two we definitely need to support.
I could see a use for recognizing 9:16 displays (like a portrait monitor)
but I don't know how critical that use is. Perhaps we can simple add a
fraction into an array somewhere (like this new method?) telling it what
sizes it should recognize...

There would also be value in 16:10 ratios (ie computer displays)

so does it make sense to store the ratio separately? I 'm trying to think end-to-end, what would be the best way to retrieve such information. We could store the value pair, and do computation in the screens controller

Zach - Any chance you want to write a test case to go along with this? If you do, I think we can mark this resolved. If you'd rather I write the test that's fine to, just let me know!

(from [e9b6a7a23d436d45f6a79b12712bef7d59a79dec]) Closes #111 Aspect Ratio Identification and optimized #108 Templates for InDesign inconsistancy https://github.com/concerto/concerto/commit/e9b6a7a23d436d45f6a79b1...