Theme now support helpers

Conflicts:
	app/decorators/post_decorator.rb
	config/application.rb
I18n regression
Theme now supports helpers! Also moved theme structure

Rails helpers are now part of themes the same way you can use them in
app/helpers. The default theme has changed to reflect the current state
theme structure
Merge branch 'master' into pothibo.com
Moved helpers (decorator) and pothibo theme updated