Better Sleeping

Updated version of Better Sleeping 2 for Minecraft 1.9.4.

- Fixed sleeping on the ground

- Added a keybind (default J) to sleep on the ground anytime

- Changed default values for min/max time for sleep (= you can sleep anytime) but lowered the minimal tiredness that allows you to sleep

- Fixed the name of potions (that might have been in the previous version as well though) so config reset might be required/preferred to avoid spam in the chat log.