Make title field not required in dialogs to create events

This way if we select a notification message we can leave the title empty and use the title from notification message (which supports substitution)

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/Base_viewAddEventDialog/your_title.xml

@@ -11,7 +11,6 @@
             <value>
               <list>
                 <string>editable</string>
-                <string>required</string>
               </list>
             </value>
         </item>
@@ -84,10 +83,6 @@
                     <key> <string>form_id</string> </key>
                     <value> <string>Base_viewCRMFieldLibrary</string> </value>
                 </item>
-                <item>
-                    <key> <string>required</string> </key>
-                    <value> <int>1</int> </value>
-                </item>
                 <item>
                     <key> <string>target</string> </key>
                     <value> <string>Click to edit the target</string> </value>

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/Event_viewCreateResponseDialog/your_response_event_title.xml

@@ -10,9 +10,8 @@
             <key> <string>delegated_list</string> </key>
             <value>
               <list>
-                <string>required</string>
-                <string>title</string>
                 <string>default</string>
+                <string>title</string>
               </list>
             </value>
         </item>
@@ -79,6 +78,10 @@
             <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>
@@ -87,10 +90,6 @@
                     <key> <string>form_id</string> </key>
                     <value> <string>Base_viewFieldLibrary</string> </value>
                 </item>
-                <item>
-                    <key> <string>required</string> </key>
-                    <value> <int>1</int> </value>
-                </item>
                 <item>
                     <key> <string>target</string> </key>
                     <value> <string>Click to edit the target</string> </value>

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/Ticket_viewNewEventDialog/your_title.xml

@@ -11,7 +11,6 @@
             <value>
               <list>
                 <string>editable</string>
-                <string>required</string>
               </list>
             </value>
         </item>
@@ -84,10 +83,6 @@
                     <key> <string>form_id</string> </key>
                     <value> <string>Base_viewCRMFieldLibrary</string> </value>
                 </item>
-                <item>
-                    <key> <string>required</string> </key>
-                    <value> <int>1</int> </value>
-                </item>
                 <item>
                     <key> <string>target</string> </key>
                     <value> <string>Click to edit the target</string> </value>

bt5/erp5_crm/bt/revision

-638
\ No newline at end of file
+639
\ No newline at end of file