erp5_project: fix task columns

bt5/erp5_project/SkinTemplateItem/portal_skins/erp5_project/ProjectLine_viewTaskList/listbox.xml

@@ -151,9 +151,13 @@
                           <string>Task Title</string>
                         </tuple>
                         <tuple>
-                          <string>source_title</string>
+                          <string>task_line_resource_title</string>
                           <string>Resource</string>
                         </tuple>
+                        <tuple>
+                          <string>source_title</string>
+                          <string>Assignee</string>
+                        </tuple>
                         <tuple>
                           <string>delivery.start_date</string>
                           <string>Begin Date</string>

bt5/erp5_project/SkinTemplateItem/portal_skins/erp5_project/Project_viewTaskList/listbox.xml

@@ -151,8 +151,8 @@
                           <string>Task Title</string>
                         </tuple>
                         <tuple>
-                          <string>source_title</string>
-                          <string>Resource</string>
+                          <string>task_line_resource_title</string>
+                          <string>Service</string>
                         </tuple>
                         <tuple>
                           <string>source_title</string>