ERP5Workflow: display roles nicely on transition listing view

+ improve TALES on transition guard role list

bt5/erp5_workflow/SkinTemplateItem/portal_skins/erp5_workflow/Transition_view/my_guard_role_list.xml

@@ -118,7 +118,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: [(x, x) for x in here.getParent().getManagedRoleList()]</string> </value>
+            <value> <string>python: [(x, x) for x in context.getManagedRoleList()]</string> </value>
         </item>
       </dictionary>
     </pickle>

bt5/erp5_workflow/SkinTemplateItem/portal_skins/erp5_workflow/Workflow_viewTransitionList.xml

@@ -88,6 +88,7 @@
                     <value>
                       <list>
                         <string>my_title</string>
+                        <string>listbox_guard_role_list</string>
                       </list>
                     </value>
                 </item>

bt5/erp5_workflow/SkinTemplateItem/portal_skins/erp5_workflow/Workflow_viewTransitionList/listbox.xml

@@ -98,7 +98,7 @@
                         </tuple>
                         <tuple>
                           <string>guard_role_list</string>
-                          <string>Required Roles</string>
+                          <string>Guard Roles</string>
                         </tuple>
                         <tuple>
                           <string>before_script_list</string>

bt5/erp5_workflow/SkinTemplateItem/portal_skins/erp5_workflow/Workflow_viewTransitionList/listbox_guard_role_list.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>default</string>
+              </list>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>listbox_guard_role_list</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>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>tales</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value>
+                      <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>field_id</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>form_id</string> </key>
+                    <value> <string></string> </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>values</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>field_id</string> </key>
+                    <value> <string>my_string_field</string> </value>
+                </item>
+                <item>
+                    <key> <string>form_id</string> </key>
+                    <value> <string>Base_viewFieldLibrary</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: \', \'.join(cell.getGuardRoleList())</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>