BaseController: rename __before__ to _before
BaseController: rename __before__ to _before

__before__ is deprecated, and using it renders a Pylons+TG bug
(controller gets invoked twice).

dkm/skylines,dkm/skylines,Turbo87/skylines,dkm/skylines,Harry-R/skylines,Harry-R/skylines,Turbo87/skylines,skylines-project/skylines,kerel-fs/skylines,RBE-Avionik/skylines,RBE-Avionik/skylines,kerel-fs/skylines,skylines-project/skylines,Turbo87/skylines,shadowoneau/skylines,TobiasLohner/SkyLines,TobiasLohner/SkyLines,snip/skylines,RBE-Avionik/skylines,kerel-fs/skylines,snip/skylines,RBE-Avionik/skylines,dkm/skylines,Harry-R/skylines,skylines-project/skylines,Turbo87/skylines,shadowoneau/skylines,skylines-project/skylines,snip/skylines,shadowoneau/skylines,shadowoneau/skylines,Harry-R/skylines,TobiasLohner/SkyLines