Add RSS feeds (fix #57) (#90)

* Add RSS feeds

* feat(rss): feature-ify rss

* feat(rss): config-ify rss

* fix(rss): update info page

* feat(rss): conditionally add RSS feeds to user and sub pages

* feat(rss): implement URLs for RSS

templates/subreddit.html

@@ -27,7 +27,7 @@
 						{% call utils::sort(["/r/", sub.name.as_str()].concat(), ["hot", "new", "top", "rising", "controversial"], sort.0) %}
 					{% endif %}
 				</div>
-				{% if sort.0 == "top" || sort.0 == "controversial" %}<select id="timeframe" name="t" title="Timeframe"> 
+				{% if sort.0 == "top" || sort.0 == "controversial" %}<select id="timeframe" name="t" title="Timeframe">
 					{% call utils::options(sort.1, ["hour", "day", "week", "month", "year", "all"], "day") %}
 				</select>
 				<button id="sort_submit" class="submit">
@@ -130,7 +130,13 @@
 							</form>
 							{% endif %}
 						</div>
-					</div>
+						{% if crate::utils::enable_rss() %}
+						<div id="sub_rss">
+                            <a href="/r/{{ sub.name }}.rss" title="RSS feed for r/{{ sub.name }}">
+                                <button class="subscribe">RSS feed</button >
+                            </a>
+						</div>
+						{% endif %}
 				</div>
 			</details>
 			<details class="panel" id="sidebar">