[FIX] webside_slides: marketing added in dependencies.
[FIX] webside_slides: marketing added in dependencies.

Causes traceback since a menu rom marketing module is required.

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