Merge pull request #324 from noesya/feature/blocks

.../images/communication/blocks/templates/call_to_action.jpg

...ets/images/communication/blocks/templates/definitions.jpg

app/assets/images/communication/blocks/templates/pages.jpg

...assets/images/communication/blocks/templates/timeline.jpg

app/assets/stylesheets/commons/_summernote.sass

app/models/communication/block.rb

app/models/communication/block/template/call_to_action.rb

app/models/communication/block/template/definition.rb

app/models/communication/block/template/page.rb

app/models/communication/block/template/post.rb

app/models/communication/block/template/timeline.rb

...munication/blocks/templates/call_to_action/_edit.html.erb

...munication/blocks/templates/call_to_action/_show.html.erb

...nication/blocks/templates/call_to_action/_static.html.erb

...communication/blocks/templates/definitions/_edit.html.erb

...communication/blocks/templates/definitions/_show.html.erb

...mmunication/blocks/templates/definitions/_static.html.erb

...admin/communication/blocks/templates/pages/_edit.html.erb

...admin/communication/blocks/templates/pages/_show.html.erb

...min/communication/blocks/templates/pages/_static.html.erb