Fix controls display when views have blocks with floated content (bug #547421)

Signed-off-by: Richard Mansfield <richardm@catalyst.net.nz>

htdocs/theme/raw/templates/view/blocktypecontainerediting.tpl

-    <div class="blockinstance{if $configure} configure{/if}" id="blockinstance_{$id}{if $configure}_configure{/if}">
+    <div class="blockinstance cb{if $configure} configure{/if}" id="blockinstance_{$id}{if $configure}_configure{/if}">
         <div class="blockinstance-header">
             <h4>{$title|default:"[$strnotitle]"}{if $configure}: {str tag=Configure section=view}{/if}</h4>
         </div>

htdocs/theme/raw/templates/view/blocktypecontainerviewing.tpl

-    <div class="blockinstance bt-{$blocktype}" id="blockinstance_{$id}">
+    <div class="blockinstance cb bt-{$blocktype}" id="blockinstance_{$id}">
         {if $title}<div class="blockinstance-header">
             <h4>{if $viewartefacturl}<a href="{$viewartefacturl}" title="{str tag=clickformoreinformation section=view}">{/if}{$title}{if $viewartefacturl}</a>{/if}{if $hasfeed}<a href="{$feedlink}"><img class="feedicon" src="{theme_url filename='images/rss.gif'}"></a>{/if}</h4>
         </div>{/if}