Tidy up body temp code

Conflicts:

	player.cpp
More minor tinkering in bodytemp code
Cleaning : made a grammar issue more compact
Cleaning up body temp code still
Added some missing ()s and {}s
Allman styling 200/450 lines of player::suffer
Allman style'd player::update_bodytemp()
Renamed README.md to CONTRIBUTING.md as it's more accurate
Remove unneeded information about the game from CONTRIBUTING.md
Updated README.md with extra content from the original README
Fix syntax error in README.md
Add link to CONTRIBUTING.md
Fix syntax error
Add Code Style info
Merge remote-tracking branch 'dda/pr/866' into dda-master
Remove shadowed variables from headers
Un-shadow a member of picojson
Remove some variable shadowing (in files touched by another cleanup branch)
pickup: Prevent pgup/pgdn item selection. multidrop: restore (number)+(letter) partial drop functionality
Update CONTRIBUTING.md link to full path