add security question when deleting api-key

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

templates/Froxlor/form/yesnoquestion.html.twig

@@ -23,7 +23,11 @@
 					<input type="hidden" name="{{ id }}" value="{{ field }}"/>
 				{% endfor %}
 				<button class="btn btn-danger" type="submit" name="submitbutton">{{ lng('panel.yes') }}</button>&nbsp;
-				<a href="javascript:history.back(-1)" class="btn btn-secondary">{{ lng('panel.no') }}</a>
+				{% if back_link is defined and back_link is iterable %}
+					<a href="{{ linker(back_link) }}" class="btn btn-secondary">{{ lng('panel.no') }}</a>
+				{% else %}
+					<a href="javascript:history.back(-1)" class="btn btn-secondary">{{ lng('panel.no') }}</a>
+				{% endif %}
 			</p>
 		</div>