Add Neo4j as a sponsor

* Replaces Microsoft
* Sets sponsor images to be 70px width.
  Previously sponsor images were displayed at full size.
  After merging this, we should update other sponsors images
  to be 140x140 instead of 70x70 to make them crisp on high DPI
  displays.

Author: davidfischer

assets/src/sass/_theme.scss

@@ -21,3 +21,9 @@
   height: 2rem;
   vertical-align: -.25rem;
 }
+
+#sponsors {
+  .media img {
+    width: 70px;
+  }
+}

pythonsd/static/img/sponsors/neo4j-logo.png

@@ -40,7 +40,7 @@ <h3>Upcoming meetups</h3>
     </section>
 
     {# Sponsors #}
-    <section class="mb-3">
+    <section class="mb-3" id="sponsors">
       <div class="row">
         <div class="col-lg-6">
 
@@ -57,10 +57,10 @@ <h5 class="mt-0 mb-1"><a href="https://www.qualcomm.com/" rel="nofollow noopener
             </li>
 
             <li class="media">
-              <img src="{% static 'img/sponsors/microsoft-logo.png' %}" class="mr-3" alt="Microsoft">
+              <img src="{% static 'img/sponsors/neo4j-logo.png' %}" class="mr-3" alt="Neo4j">
               <div class="media-body">
-                <h5 class="mt-0 mb-1"><a href="https://www.microsoft.com/" rel="nofollow noopener noreferrer">Microsoft</a></h5>
-                <p class="m-0">Microsoft sponsors food at our monthly meetup</p>
+                <h5 class="mt-0 mb-1"><a href="https://neo4j.com/" rel="nofollow noopener noreferrer">Neo4j</a></h5>
+                <p class="m-0">Neo4j is providing food at our monthly meetup</p>
               </div>
             </li>