[FIX] base: activate new currency

When the user clicks on "Activate here a new currency...", it opens a
pop-up with the list of currencies. However, there is no pager for such
a list view, and not all currencies are accessible.

opw-686626

openerp/addons/base/res/res_currency_view.xml

@@ -136,7 +136,6 @@
             <field name="view_mode">tree,form</field>
             <field name="search_view_id" ref="view_currency_search"/>
             <field name="context">{'active_test': False}</field>
-            <field name="target">new</field>
         </record>
 
         <!-- We override the view res_company here because the action wasn't defined before -->