Replaced most reagent initialisations with the helper proc create_reagents().
Merge branch 'master' of github.com:tgstation/-tg-station into chemistry

Conflicts:
	code/game/objects/items/weapons/tools.dm
Reverting accidental changes.
Merge pull request #571 from Petethegoat/chemistry

Replaced most reagent initialisations with the helper proc create_reagents().