[FIX] website_forum: don't index forum_post if deleted
[FIX] website_forum: don't index forum_post if deleted

update can view, to remove deleted post from sitemap and make controller unavailable for lambda user.
Only Admin, and users with enough karams can continue to see them and undelete them.

storm-computers/odoo,microcom/odoo,storm-computers/odoo,sysadminmatmoz/OCB,ygol/odoo,stephen144/odoo,storm-computers/odoo,hip-odoo/odoo,dfang/odoo,dfang/odoo,Elico-Corp/odoo_OCB,microcom/odoo,bplancher/odoo,laslabs/odoo,storm-computers/odoo,dfang/odoo,storm-computers/odoo,laslabs/odoo,laslabs/odoo,bplancher/odoo,bplancher/odoo,sysadminmatmoz/OCB,bplancher/odoo,dfang/odoo,stephen144/odoo,sysadminmatmoz/OCB,microcom/odoo,ygol/odoo,dfang/odoo,ygol/odoo,Elico-Corp/odoo_OCB,microcom/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,sysadminmatmoz/OCB,microcom/odoo,dfang/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,laslabs/odoo,hip-odoo/odoo,ygol/odoo,stephen144/odoo,stephen144/odoo,hip-odoo/odoo,bplancher/odoo,bplancher/odoo,stephen144/odoo,sysadminmatmoz/OCB,hip-odoo/odoo,laslabs/odoo,Elico-Corp/odoo_OCB,stephen144/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,microcom/odoo,ygol/odoo,storm-computers/odoo,Elico-Corp/odoo_OCB,laslabs/odoo,sysadminmatmoz/OCB