Update syntax for item requirements
Merge pull request #446 from dorkster/item_req

Update syntax for item requirements
Moved some of menus/powers.txt to powers/trees/default.txt
Merge pull request #445 from dorkster/power_tree

Moved some of menus/powers.txt to powers/trees/default.txt
Updated the Galician (gl) translation
Merge pull request #447 from Gallaecio/gl

Updated the Galician (gl) translation