Added lua GUI front-end for autobutcher.
Added some more commands to autobutcher UI script.
Changed autobutcher behavior a bit:
now protected units count towards the target quota,
units available for adoption are considered as protected.
Added filters for caged, male and female to assignement UI
for cages, pastures and pits.
fix in zone UI filters: lower case 'f' conflicted as hotkey with toggling between pit and pond in the pit screen. So now the filter keys use upper case letters instead.
Add example keybindings