defringe tuning: correct out of bounds check in fib_latt (just for safety, should never really happen at runtime)
defringe tuning: correct wrong *2.0 in local average and have a minmax of 0.1f
defringe tuning: remove strength slider + tune threshold & radius settings + picture for usermanual w/o strength slider
defringe tuning: compress code together that became redundant from tunings
Merge pull request #708 from bluesceada/defringe-tuning

Defringe tuning