[FIX] web: better warning message when missing dependencies
[FIX] web: better warning message when missing dependencies

sysadminmatmoz/OCB,stephen144/odoo,storm-computers/odoo,microcom/odoo,hip-odoo/odoo,hip-odoo/odoo,microcom/odoo,optima-ict/odoo,storm-computers/odoo,optima-ict/odoo,storm-computers/odoo,optima-ict/odoo,mkieszek/odoo,tvtsoft/odoo8,hip-odoo/odoo,mkieszek/odoo,laslabs/odoo,dfang/odoo,syci/OCB,Elico-Corp/odoo_OCB,ygol/odoo,syci/OCB,stephen144/odoo,bplancher/odoo,storm-computers/odoo,stephen144/odoo,mkieszek/odoo,tvtsoft/odoo8,mkieszek/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,microcom/odoo,syci/OCB,storm-computers/odoo,Elico-Corp/odoo_OCB,tvtsoft/odoo8,bplancher/odoo,dfang/odoo,syci/OCB,stephen144/odoo,laslabs/odoo,laslabs/odoo,hip-odoo/odoo,bplancher/odoo,tvtsoft/odoo8,tvtsoft/odoo8,laslabs/odoo,bplancher/odoo,hip-odoo/odoo,optima-ict/odoo,tvtsoft/odoo8,ygol/odoo,bplancher/odoo,microcom/odoo,hip-odoo/odoo,mkieszek/odoo,dfang/odoo,ygol/odoo,Elico-Corp/odoo_OCB,microcom/odoo,sysadminmatmoz/OCB,dfang/odoo,ygol/odoo,mkieszek/odoo,laslabs/odoo,stephen144/odoo,dfang/odoo,ygol/odoo,syci/OCB,ygol/odoo,laslabs/odoo,storm-computers/odoo,sysadminmatmoz/OCB,Elico-Corp/odoo_OCB,stephen144/odoo,optima-ict/odoo,sysadminmatmoz/OCB,optima-ict/odoo,ygol/odoo,Elico-Corp/odoo_OCB,sysadminmatmoz/OCB,dfang/odoo,microcom/odoo,syci/OCB,Elico-Corp/odoo_OCB,bplancher/odoo