[ADD] base: Added access rules for currency rate type.
[ADD] base: Added access rules for currency rate type.
ovnicraft/openerp-server,vnc-biz/openerp-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,MarkusTeufelberger/openobject-server,ovnicraft/openerp-server,splbio/openobject-server,splbio/openobject-server,vnc-biz/openerp-server,gisce/openobject-server,gisce/openobject-server