CRM-21125 permit class assignment on reports

Assists with dedupe analysis as I am using this to provide pop-ups on
analysis reports rather than forcing click throughs to see more.

civicrm#10922

Change-Id: I5369a58035fef294b58c2dd1a89519c069d46443

templates/CRM/Report/Form/Layout/Table.tpl

@@ -110,9 +110,10 @@
                 {foreach from=$columnHeaders item=header key=field}
                     {assign var=fieldLink value=$field|cat:"_link"}
                     {assign var=fieldHover value=$field|cat:"_hover"}
+                    {assign var=fieldClass value=$field|cat:"_class"}
                     <td class="crm-report-{$field}{if $header.type eq 1024 OR $header.type eq 1 OR $header.type eq 512} report-contents-right{elseif $row.$field eq 'Subtotal'} report-label{/if}">
                         {if $row.$fieldLink}
-                            <a title="{$row.$fieldHover}" href="{$row.$fieldLink}">
+                            <a title="{$row.$fieldHover}" href="{$row.$fieldLink}" {if $row.$fieldClass} class="{$row.$fieldClass}"{/if}>
                         {/if}
 
                         {if $row.$field eq 'Subtotal'}