sexy primes do not matter

there is no reason to use primes (sexy or otherwise)
this algorithm doesn't even require integers!!!
removed sexy primes

previous commit only removed confusing comments

...note:

integers are not required for this algorithm
(primes or otherwise)
fixed zero with known working config.js

these settings are the ones I personally use
Merge branch 'config.fix' of github.com:kuzetsa/gekko into portfolio.debug

for consistency