Merge pull request #905 from noesya/extranet/blocks

app/assets/stylesheets/extranet.sass

app/models/communication/extranet/document.rb

...in/communication/blocks/components/code/_preview.html.erb

...n/communication/blocks/components/image/_preview.html.erb

...ication/blocks/templates/call_to_action/_preview.html.erb

...in/communication/blocks/templates/embed/_preview.html.erb

.../communication/blocks/templates/gallery/_preview.html.erb

...unication/blocks/templates/testimonials/_preview.html.erb

...communication/blocks/templates/timeline/_preview.html.erb

...in/communication/blocks/templates/video/_preview.html.erb

app/views/extranet/application/_head.html.erb

app/views/extranet/layouts/application.html.erb

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

db/schema.rb

test/fixtures/communication/extranet/documents.yml

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