Optimize product_categories fetch from enterprise
Optimize product_categories fetch from enterprise

Conflicts:
	app/helpers/application_helper.rb
	app/models/enterprise.rb
	test/unit/enterprise_test.rb

blogoosfero/noosfero,samasti/noosfero,blogoosfero/noosfero,blogoosfero/noosfero,CIRANDAS/noosfero-ecosol,coletivoEITA/noosfero-ecosol,samasti/noosfero,EcoAlternative/noosfero-ecosol,EcoAlternative/noosfero-ecosol,CIRANDAS/noosfero-ecosol,EcoAlternative/noosfero-ecosol,CIRANDAS/noosfero-ecosol,CIRANDAS/noosfero-ecosol,blogoosfero/noosfero,samasti/noosfero,EcoAlternative/noosfero-ecosol,coletivoEITA/noosfero-ecosol,CIRANDAS/noosfero-ecosol,EcoAlternative/noosfero-ecosol,coletivoEITA/noosfero-ecosol,coletivoEITA/noosfero-ecosol,samasti/noosfero,EcoAlternative/noosfero-ecosol,blogoosfero/noosfero,EcoAlternative/noosfero-ecosol,blogoosfero/noosfero,samasti/noosfero,coletivoEITA/noosfero-ecosol,coletivoEITA/noosfero-ecosol,blogoosfero/noosfero,samasti/noosfero