Bug 1864581 Plan tasks in block in edit mode need to have more space

Added a clearfix div when there is no description so that the plans
don't bunch up on the left of the top set of buttons.

behatnotneeded

Change-Id: I3656f246728f78c67e8d92e2037f157cff6d96c6

htdocs/theme/raw/plugintype/artefact/plans/blocktype/plans/templates/content.tpl

@@ -24,6 +24,8 @@
         {/if}
         {if $plan.description}
             <p>{$plan.description}</p>
+        {else}
+            <div class="clearfix"></div>
         {/if}
         {if $plan.tags}
             <div class="tags text-small">