added a more databound version of <f:repeatable>

core/src/main/resources/lib/form/repeatableProperty.jelly

+<!--
+The MIT License
+
+Copyright (c) 2010, CloudBees, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+-->
+
+<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
+  <st:documentation> <![CDATA[]
+    Data-bound only version of <f:repeatable> that assumes the type pointed by the property is data-bound as well.
+  ]]>
+
+    <st:attribute name="field">
+      Used for the data binding.
+    </st:attribute>
+    <st:attribute name="noAddButton">
+      true if the default 'add' button (that adds a new copy) shouldn't be displayed.
+      When you use this attribute,
+    </st:attribute>
+    <st:attribute name="add">
+      If specified, this text will replace the standard "Add" text.
+    </st:attribute>
+    <st:attribute name="minimum">
+      At least provide this number of copies initially.
+      minimum="1" is useful to make sure there's always at least one entry for the user to fill in.
+    </st:attribute>
+    <st:attribute name="header">
+      For each item, add this header.
+      This also activates drag&amp;drop (where the header is a grip).
+    </st:attribute>
+  </st:documentation>
+
+
+  <f:repeatable field="${attrs.field}" noAddButton="${attrs.noAddButton}" header="${attrs.header}">
+    <table style="width:100%">
+      <st:include page="config.jelly" class="${descriptor.clazz}" />
+    </table>
+  </f:repeatable>
+</j:jelly>