[IMP] website: new snippet for many2one and contact field
[FIX] website: update the many2one field tests. many2one id can be changed now
[FIX] website: many2one snippet: add contenteditable false on focus because the rte apply a contenteditable true and the content can't be modified
[IMP] website_blog: change avatar when the author id is changed; add o_not_editable classname to cancel edition
[IMP] website: merge master-snippet-contact-chm to new snippet for many2one and contact field; add o_not_editable classname to cancel edition