Add Kerchof Rooms Booking System Link

- Introduced a new link for the "Kerchof Rooms Booking System" to the front page link list.
- Commented out the previously present link for "Jobs."

Signed-off-by: Leonid Petrov <[email protected]>

Author: lenis2000

_includes/front_page_link_list.html

@@ -20,4 +20,10 @@
     class="list-group-item list-group-item-action {{ include.classes }}"
     >UG Degree requirements</a
 >
+
+<a
+    href="https://math.virginia.edu/mrbs/"
+    class="list-group-item list-group-item-action {{ include.classes }}"
+    >Kerchof Rooms Booking System</a
+>
 <!-- <a href="{{site.url}}/current-jobs/" class="list-group-item list-group-item-action {{ include.classes }}" >Jobs</a> -->