Merge pull request #902 from noesya/extranet_post_categories

app/views/extranet/posts/posts/_list.html.erb

app/views/extranet/posts/posts/index.html.erb

app/views/extranet/posts/posts/show.html.erb

config/locales/communication/en.yml

config/locales/communication/fr.yml

config/routes/admin/communication.rb

config/routes/extranet.rb

...09131421_create_communication_extranet_post_categories.rb

db/schema.rb

test/fixtures/communication/extranet/post/categories.yml

test/fixtures/communication/extranet/posts.yml

test/models/communication/extranet/post/category_test.rb

test/models/communication/extranet/post_test.rb