payment_mean: make "limit" required

Submitting the field with an empty limit now cause an error like:

    ValueError: invalid literal for int() with base 10: ''

For simplicity, make the field required.

Also set a small default value and a range, to prevent accidentally displaying
too much when there's lot of data matching.

bt5/erp5_payment_mean/SkinTemplateItem/portal_skins/erp5_payment_mean/PaymentTransactionGroup_viewSelectPaymentTransactionLineListDialog/your_limit.xml

@@ -10,6 +10,9 @@
             <key> <string>delegated_list</string> </key>
             <value>
               <list>
+                <string>default</string>
+                <string>end</string>
+                <string>required</string>
                 <string>start</string>
                 <string>title</string>
               </list>
@@ -61,10 +64,18 @@
                     <key> <string>form_id</string> </key>
                     <value> <string></string> </value>
                 </item>
+                <item>
+                    <key> <string>start</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>
               </dictionary>
             </value>
         </item>
@@ -72,6 +83,14 @@
             <key> <string>values</string> </key>
             <value>
               <dictionary>
+                <item>
+                    <key> <string>default</string> </key>
+                    <value> <string>50</string> </value>
+                </item>
+                <item>
+                    <key> <string>end</string> </key>
+                    <value> <int>1000</int> </value>
+                </item>
                 <item>
                     <key> <string>field_id</string> </key>
                     <value> <string>my_integer_value</string> </value>
@@ -80,6 +99,10 @@
                     <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>start</string> </key>
                     <value> <int>0</int> </value>