#DunkCode Cleanup

Adjusted familiarity indicator display to better indicate progress. Removed unnecessary familiarity checks. Chickens will follow all livestock food instead of just wheat grain. Livestock will follow maize ears in addition to grains to match breeding items. Removed luring deer with vanilla wheat.
fix spawn protection not being correctly loaded.

- mark Chunk as modified when spawn protection is changed
- avoid integer division rounding error
- create one private method to update spawn protection

- changed GSP command to allow entering chunk coordinates

point 2 of http://terrafirmacraft.com/f/topic/7089-spawn-protection-bugs/#entry94989