HolmesUI renamed to FlexUI (or simply UI); small fixes; changed FlexUI authorship...

HolmesUI renamed to FlexUI (or simply UI); small fixes; changed FlexUI authorship info (READ THE WHOLE COMMENT, PLZ!)

  as i wrote the whole FlexUI code, and i may need to relicense it later,
  i explicitly put myself as the only FlexUI author, to avoid possible
  complications in the future.

  please, don't add/fix code in FlexUI without talking to me first.