Buffs damage of Two handed weapons

Increases the damage of Two handed weapons to give them more of an advantage over One handed ones, Suggestion and Exact damage values originally from http://www.ss13.eu/phpbb/viewtopic.php?f=10&t=1303

Balance issues and Damage value Discussion can happen here: http://www.ss13.eu/phpbb/viewtopic.php?f=12&t=1440

Sidenote: If this is pulled a Changelog change would be needed, so everyone knows why X weapon kills faster than before.