Add support for Markdown in practice location

Allows the location to link to a map and gives formatting options, like
bolding the location name.
Signed-off-by: Ethan Madison <ethan@ethanmad.com>

layouts/partials/sidebar-single.html

@@ -13,6 +13,7 @@
             {{ with .Site.Params.practiceTimes.friday }}<strong>Friday</strong>: {{ . }}<br>{{ end }}
             {{ with .Site.Params.practiceTimes.saturday }}<strong>Saturday</strong>: {{ . }}<br>{{ end }}
         {{ end }}
+        {{ with .Site.Params.practiceLocation }}at {{ . | markdownify }}{{ end }}
 	</div>
 
     {{ if (isset .Site.Params "practiceTimes") and (isset .Site.Params "calendarId") }}