Require alchemy/site in Language model
Require alchemy/site in Language model

Sometimes during seeding or testing the Alchemy constant is missing
while accessing Alchemy::Language.on_current_site

Ideally we would not need to add this, but it is easier to fix it like
this then trying to track down the root cause of this.

robinboening/alchemy_cms,robinboening/alchemy_cms,AlchemyCMS/alchemy_cms,mamhoff/alchemy_cms,AlchemyCMS/alchemy_cms,AlchemyCMS/alchemy_cms,mamhoff/alchemy_cms,robinboening/alchemy_cms,mamhoff/alchemy_cms