Bug 1846813: Placing plan html export template in correct folder

Also removing the duplicate plan leap export template

Change-Id: If9ca389df8f04d719f218c3ce378205a02607174
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>

htdocs/theme/raw/plugintype/artefact/plans/templates/export/leap/templates/plan.tpl

-{include file="export:leap:entry.tpl" skipfooter=true}
-{if $completion}        <leap2:status leap2:stage="{$completion}" />{/if}
-{include file="export:leap:entryfooter.tpl"}