Merge pull request #865 from noesya/extranet_posts

app/controllers/admin/communication/blocks_controller.rb

...rollers/admin/communication/extranets/posts_controller.rb

app/controllers/extranet/alumni/application_controller.rb

app/controllers/extranet/contacts/application_controller.rb

app/controllers/extranet/posts/application_controller.rb

app/controllers/extranet/posts/posts_controller.rb

app/models/communication/extranet.rb

app/models/communication/extranet/post.rb

app/views/admin/communication/extranets/posts/_form.html.erb

app/views/admin/communication/extranets/posts/_list.html.erb

app/views/admin/communication/extranets/posts/edit.html.erb

app/views/admin/communication/extranets/posts/index.html.erb

app/views/admin/communication/extranets/posts/new.html.erb

...iews/admin/communication/extranets/posts/preview.html.erb

app/views/admin/communication/extranets/posts/show.html.erb

...iews/admin/communication/photo_imports/_selector.html.erb

app/views/extranet/alumni/academic_years/index.html.erb

app/views/extranet/alumni/cohorts/_index_cards.html.erb

app/views/extranet/alumni/cohorts/_list.html.erb

app/views/extranet/alumni/organizations/index.html.erb