added back to heroes list button

heroes/templates/hero/detail_cloud.html

@@ -12,5 +12,6 @@
 <dt>Skills</dt><dd>Nimbus, Rain Cloud, Thunderbolt</dd>
 <dt>Lore</dt><dd>I am a cloud. When I pee you call it 'rain'.</dd>
 </dl>
+<button onclick="location.href='/heroes'" type="button">Back to Heroes List</button>
 </body>
 </html>

heroes/templates/hero/detail_jester.html

@@ -12,5 +12,6 @@
 <dt>Skills</dt><dd>Laugh, Dance, Smile</dd>
 <dt>Lore</dt><dd>I do it for the LOLs.</dd>
 </dl>
+<button onclick="location.href='/heroes'" type="button">Back to Heroes List</button>
 </body>
 </html>

heroes/templates/hero/detail_sunflowey.html

@@ -12,5 +12,6 @@
 <dt>Skills</dt><dd>Power Pellet, Sunshine, Pollen Punch</dd>
 <dt>Lore</dt><dd>I am Sunflowey. Sometimes a sun, sometimes a flower.</dd>
 </dl>
+<button onclick="location.href='/heroes'" type="button">Back to Heroes List</button>
 </body>
 </html>