Merge pull request #1271 from noesya/block-agenda

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

...ets/images/communication/blocks/templates/agenda/grid.png

...ets/images/communication/blocks/templates/agenda/list.png

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

app/models/communication/website/agenda/event.rb

...dmin/communication/blocks/templates/agenda/_edit.html.erb

...in/communication/blocks/templates/agenda/_static.html.erb

config/locales/communication/contents/en.yml

config/locales/communication/contents/fr.yml