erp5_mrp: add preference to define which type to produce

bt5/erp5_mrp/PropertySheetTemplateItem/portal_property_sheets/MRPPreference/preferred_production_type_property.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Standard Property" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>elementary_type/lines</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>preferred_production_type_property</string> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Standard Property</string> </value>
+        </item>
+        <item>
+            <key> <string>preference</string> </key>
+            <value> <int>1</int> </value>
+        </item>
+        <item>
+            <key> <string>property_default</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_mrp/SkinTemplateItem/portal_skins/erp5_mrp/SystemPreference_viewMaterialResourcePlanning.xml

@@ -96,7 +96,9 @@
                 <item>
                     <key> <string>left</string> </key>
                     <value>
-                      <list/>
+                      <list>
+                        <string>my_preferred_production_type</string>
+                      </list>
                     </value>
                 </item>
                 <item>

bt5/erp5_mrp/SkinTemplateItem/portal_skins/erp5_mrp/SystemPreference_viewMaterialResourcePlanning/my_preferred_production_type.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="ProxyField" module="Products.ERP5Form.ProxyField"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>delegated_list</string> </key>
+            <value>
+              <list>
+                <string>items</string>
+                <string>title</string>
+              </list>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>my_preferred_production_type</string> </value>
+        </item>
+        <item>
+            <key> <string>message_values</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>external_validator_failed</string> </key>
+                    <value> <string>The input failed the external validator.</string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>overrides</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>field_id</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>form_id</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>target</string> </key>
+                    <value> <string></string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>tales</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>field_id</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>form_id</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>items</string> </key>
+                    <value>
+                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>target</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>title</string> </key>
+                    <value> <string></string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>values</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>field_id</string> </key>
+                    <value> <string>my_category</string> </value>
+                </item>
+                <item>
+                    <key> <string>form_id</string> </key>
+                    <value> <string>Base_viewFieldLibrary</string> </value>
+                </item>
+                <item>
+                    <key> <string>items</string> </key>
+                    <value>
+                      <list/>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>target</string> </key>
+                    <value> <string>Click to edit the target</string> </value>
+                </item>
+                <item>
+                    <key> <string>title</string> </key>
+                    <value> <string>Production Type</string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_text</string> </key>
+            <value> <string>python: [(\'\',\'\')] + [(x, x) for x in here.getPortalItemTypeList()]</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>