addons-init: better messages when an ir.model is missing
addons-init: better messages when an ir.model is missing

Suppress the msgs "no access rules", but add an explicit message that
the model is not there.

splbio/openobject-server,MarkusTeufelberger/openobject-server,ovnicraft/openerp-server,gisce/openobject-server,splbio/openobject-server,gisce/openobject-server,vnc-biz/openerp-server,MarkusTeufelberger/openobject-server,vnc-biz/openerp-server,splbio/openobject-server,ovnicraft/openerp-server,MarkusTeufelberger/openobject-server,gisce/openobject-server