'loop' vs 'live_loop' in Sonic Pi documentation / education

Hi, Ethan!

I answered to Sam in my other comment (Tau Suggestions - #48 by cazarim ).

But, to sum up the question, I don’t think it’s an extra work to non-English speakers. On the contrary: less words and special characters is less work to us. It’s nice to read what Sam wrote here because it puts things on historical perspective too (loop came first as a function, then live_loop etc.). Maybe we should think (as I suggested in my reply) of loop as an alias of live_loop, because it really is nicer to type on mobiles and tablets (which will surely be used to live code).