fixup! WIP: Inventory api: interpolation + group by time sequence

SimulationTool_zGetInterpolationMethod is called in restricted context
of Resource_zGetMovementHistoryList so it needs to be usable by
anonymous.

ZSQL Method does not read parameters from REQUEST, so it looks safe.

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/SimulationTool_zGetInterpolationMethod.xml

@@ -10,7 +10,7 @@
             <key> <string>_Use_Database_Methods_Permission</string> </key>
             <value>
               <list>
-                <string>Member</string>
+                <string>Anonymous</string>
               </list>
             </value>
         </item>