core: fix roles on Python Script proxy role view

Don't hardcode a few roles, use the API to get all roles

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/PythonScript_viewProxyRole/my_proxy_role_list.xml

@@ -63,10 +63,28 @@
                     <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>size</string> </key>
+                    <value> <string></string> </value>
+                </item>
                 <item>
                     <key> <string>target</string> </key>
                     <value> <string></string> </value>
                 </item>
+                <item>
+                    <key> <string>title</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>view_separator</string> </key>
+                    <value> <string></string> </value>
+                </item>
               </dictionary>
             </value>
         </item>
@@ -85,24 +103,7 @@
                 <item>
                     <key> <string>items</string> </key>
                     <value>
-                      <list>
-                        <tuple>
-                          <string>Manager</string>
-                          <string>Manager</string>
-                        </tuple>
-                        <tuple>
-                          <string>Author</string>
-                          <string>Author</string>
-                        </tuple>
-                        <tuple>
-                          <string>Assignor</string>
-                          <string>Assignor</string>
-                        </tuple>
-                        <tuple>
-                          <string>Assignee</string>
-                          <string>Assignee</string>
-                        </tuple>
-                      </list>
+                      <list/>
                     </value>
                 </item>
                 <item>
@@ -131,4 +132,17 @@
       </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: [(role, role) for role in context.valid_roles()]</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
 </ZopeData>