Generate URL to restore settings, including subscriptions. Closes #89 (#116)

* Start recursive comments

* Update comment.html

* Fix move error

* Comment improvements

* Fix merge

* Remove extra endif from post.html

* Fix post.html

* Restore setting from link

* Tweak settings page

Co-authored-by: spikecodes <19519553+spikecodes@users.noreply.github.com>

templates/subreddit.html

@@ -85,7 +85,7 @@
 						<div>{{ sub.active }}</div>
 					</div>
 					<div id="sub_subscription">
-						{% if prefs.subs.contains(sub.name) %}
+						{% if prefs.subscriptions.contains(sub.name) %}
 							<form action="/r/{{ sub.name }}/unsubscribe/" method="POST">
 								<button class="unsubscribe">Unsubscribe</button>
 							</form>