[FIX] mass_mailing: count recipients with SUPERUSER_ID to bypass security
[FIX] mass_mailing: count recipients with SUPERUSER_ID to bypass security

If a campaign was done to a list of Applicant, marketing team had an error loading the kanban view.
Because to display the number of recipents, a search is done with a domain on hr.applicant.
Model that except Human Resources / Officier, nobody can read.

storm-computers/odoo,storm-computers/odoo,Grirrane/odoo,microcom/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,dfang/odoo,laslabs/odoo,bplancher/odoo,optima-ict/odoo,storm-computers/odoo,ygol/odoo,dfang/odoo,Elico-Corp/odoo_OCB,ygol/odoo,ygol/odoo,alhashash/odoo,laslabs/odoo,optima-ict/odoo,tvtsoft/odoo8,bplancher/odoo,addition-it-solutions/project-all,alhashash/odoo,mkieszek/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,stephen144/odoo,microcom/odoo,hip-odoo/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,tvtsoft/odoo8,tvtsoft/odoo8,Elico-Corp/odoo_OCB,tvtsoft/odoo8,sysadminmatmoz/OCB,mkieszek/odoo,ygol/odoo,dfang/odoo,mkieszek/odoo,laslabs/odoo,tvtsoft/odoo8,microcom/odoo,ygol/odoo,bplancher/odoo,addition-it-solutions/project-all,hip-odoo/odoo,ygol/odoo,stephen144/odoo,dfang/odoo,laslabs/odoo,sysadminmatmoz/OCB,Grirrane/odoo,Elico-Corp/odoo_OCB,alhashash/odoo,syci/OCB,microcom/odoo,sysadminmatmoz/OCB,addition-it-solutions/project-all,Grirrane/odoo,storm-computers/odoo,addition-it-solutions/project-all,sysadminmatmoz/OCB,laslabs/odoo,Grirrane/odoo,sysadminmatmoz/OCB,addition-it-solutions/project-all,laslabs/odoo,stephen144/odoo,Elico-Corp/odoo_OCB,addition-it-solutions/project-all,alhashash/odoo,optima-ict/odoo,stephen144/odoo,bplancher/odoo,microcom/odoo,optima-ict/odoo,optima-ict/odoo,mkieszek/odoo,syci/OCB,mkieszek/odoo,Elico-Corp/odoo_OCB,alhashash/odoo,syci/OCB,alhashash/odoo,dfang/odoo,storm-computers/odoo,stephen144/odoo,dfang/odoo,bplancher/odoo,mkieszek/odoo,storm-computers/odoo,optima-ict/odoo,ygol/odoo,syci/OCB,Grirrane/odoo,syci/OCB,tvtsoft/odoo8,stephen144/odoo,bplancher/odoo,Grirrane/odoo,microcom/odoo,syci/OCB