[ADD] web: backport of function getPosition()
[ADD] web: backport of function getPosition()

to compute the offset of a DOM element

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