French translations for new messages and "solve divergence" with simulation

Main goal was to make erp5_trade 100% translated, also the divergence explanations.

The result of the solve divergence dialog is:

![solve divergence dialog in french](/uploads/7ba5d3fcccb58b223471566d528c5c0a/image.png)

This also fixes a few small problems with existing translations

See merge request nexedi/erp5!1149

bt5/erp5_configurator_standard_solver/PathTemplateItem/portal_solvers/Quantity%20Split%20Solver.xml

@@ -172,7 +172,7 @@
         </item>
         <item>
             <key> <string>solver_action_title</string> </key>
-            <value> <string>Split and Differ</string> </value>
+            <value> <string>Split and Defer</string> </value>
         </item>
         <item>
             <key> <string>type_class</string> </key>