bring the customfields filter to the top of the page

If you have many customfields this avoids scrolling to the bottom.
This also brings the customfields page in parity with users and groups.

share/html/Admin/CustomFields/index.html

@@ -53,21 +53,6 @@
 <h2><% loc("Custom Fields for [_1]", $tmp->FriendlyLookupType( $Type )) %></h2>
 % }
 
-<& /Elements/CollectionList,
-    OrderBy       => 'LookupType|Name',
-    Order         => 'ASC|ASC',
-    Rows          => 50,
-    %ARGS,
-    Collection    => $CustomFields,
-    Format        => $Format,
-    DisplayFormat => ($Type? '' : '__FriendlyLookupType__,'). $Format,
-    AllowSorting  => 1,
-    PassArguments => [
-        qw(Format Rows Page Order OrderBy),
-        qw(Type ShowDisabled)
-    ],
-&>
-
 <form action="<%RT->Config->Get('WebPath')%>/Admin/CustomFields/index.html" method="get">
 <&|/l&>Only show custom fields for:</&>
 <select name="Type">
@@ -86,6 +71,21 @@
 <input type="submit" value="<% loc('Go!') %>" />
 </form>
 
+<& /Elements/CollectionList,
+    OrderBy       => 'LookupType|Name',
+    Order         => 'ASC|ASC',
+    Rows          => 50,
+    %ARGS,
+    Collection    => $CustomFields,
+    Format        => $Format,
+    DisplayFormat => ($Type? '' : '__FriendlyLookupType__,'). $Format,
+    AllowSorting  => 1,
+    PassArguments => [
+        qw(Format Rows Page Order OrderBy),
+        qw(Type ShowDisabled)
+    ],
+&>
+
 <%args>
 $Type => ''
 $ShowDisabled => 0