Merge pull request #1389 from noesya/duplicate_blocks

app/assets/javascripts/admin/commons/content_editor.js

app/controllers/admin/application_controller.rb

app/controllers/admin/communication/blocks_controller.rb

app/models/communication/block.rb

app/services/icon.rb

app/views/admin/communication/blocks/_block.html.erb

app/views/admin/communication/blocks/_paste_block.html.erb

app/views/admin/communication/blocks/copy.js.erb

app/views/admin/communication/contents/_write.html.erb

config/locales/communication/contents/en.yml

config/locales/communication/contents/fr.yml

config/locales/communication/en.yml

config/locales/communication/fr.yml

config/routes/admin/communication.rb