[ADD] CDN support for website
[FIX] product: remove empty from state field selection

In order to avoid having twice "empty" in the web client. There is always an empty option in selection field in the web client. When the selection field is required, you have to select it, and it is not required, you can set False as selection value
[IMP] Imporve code crm_claim module in inherit kanban view. also changed claim report analysis in stage name. crm_helpdesk module in change a state to satag_id field and add customer in oe_stat button for helpdesks.