Fixed Minor Continuity Errors

I spent several hours today rewriting small areas of Broken Symmetry to fix minor inconsistencies and errors. Those sorts of things can accumulate when you spend months writing a story.

Broken Fixed

There shouldn't be much that's changed in any substantial way. It's basic things like:

* keeping the broken hoof the same one throughout
* consistency of the Manehattan communication method
* Moondancer and Celestia briefly mention Celestia being too hard on Twilight
* sweater has sand rather than vomit on it
* Moondancer mentions why she considers Sassy's aura unusual

I think I found and removed/fixed all of the consistency problems, but if you see any, please let me know! I'm tempted to submit this one to EQD eventually because it was so much fun to write.

EDIT: I'm also considering putting in a diagram (at the end) which some ponies have requested.