rely more on automatic help link

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@17885 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/Hudson.java

@@ -44,6 +44,7 @@ import hudson.ExtensionList;
 import hudson.ExtensionPoint;
 import hudson.DescriptorExtensionList;
 import hudson.ExtensionListView;
+import hudson.Extension;
 import hudson.cli.CliEntryPoint;
 import hudson.cli.CLICommand;
 import hudson.cli.HelpCommand;
@@ -1397,6 +1398,7 @@ public final class Hudson extends Node implements ItemGroup<TopLevelItem>, Stapl
     }
 
     public static final class DescriptorImpl extends NodeDescriptor {
+        @Extension
         public static final DescriptorImpl INSTANCE = new DescriptorImpl();
 
         public String getDisplayName() {

core/src/main/resources/hudson/model/Hudson/configure.jelly

@@ -30,15 +30,17 @@ THE SOFTWARE.
   <st:include page="sidepanel.jelly" />
   <l:main-panel xmlns:local="local">
     <f:form method="post" name="config" action="configSubmit">
+      <j:set var="instance" value="${it}" />
+      <j:set var="descriptor" value="${instance.descriptor}" />
+
       <f:entry title="${%Home directory}" help="/help/system-config/homeDirectory.html">
         ${it.rootDir}
       </f:entry>
       <f:entry title="${%System Message}" help="/help/system-config/systemMessage.html">
         <f:textarea name="system_message" value="${it.systemMessage}" />
       </f:entry>
-      <f:entry title="${%# of executors}" help="/help/system-config/numExecutors.html">
-        <input type="text" name="numExecutors" class="setting-input number"
-               value="${it.numExecutors}"/>
+      <f:entry title="${%# of executors}" field="numExecutors">
+        <f:textbox />
       </f:entry>
       <j:if test="${!empty(it.slaves)}">
         <f:entry title="${%Labels}" help="/help/system-config/master-slave/label.html">

core/src/main/resources/hudson/slaves/DumbSlave/configure-entries.jelly

@@ -31,9 +31,8 @@ THE SOFTWARE.
     <f:textbox field="nodeDescription" />
   </f:entry>
 
-  <f:entry title="${%# of executors}"
-           help="/help/system-config/master-slave/numExecutors.html">
-    <f:textbox field="numExecutors" />
+  <f:entry title="${%# of executors}" field="numExecutors">
+    <f:textbox />
   </f:entry>
 
   <f:entry title="${%Remote FS root}" help="/help/system-config/master-slave/remoteFS.html">