Rework the about section to match the mock-up

Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

src/index.html

@@ -67,27 +67,13 @@ blog:
     excerpt: ""
 about:
   - title: "About us"
-    excerpt: ""
-about_list:
-  - title: "Volunteers"
-    excerpt: "Tahoe-LAFS is an open-source project supported by donations and maintained by a group of hardy volunteers...<br/>"
-    url: "https://tahoe-lafs.org/trac/tahoe-lafs/wiki/AboutUs"
-    btn_label: "Read More"
-    btn_class: "btn--primary"
-  - title: "Donation"
-    excerpt: 'You can donate to the Tahoe-LAFS project via BitCoin and PayPal.<br/><br/>
-    <a href="https://tahoe-lafs.org/trac/tahoe-lafs/wiki/BitCoinPage" target="_blank">
-    <img src="assets/images/bitcoin.png"></a>
-    <a href="https://www.paypal.com/donate?cmd=_s-xclick&hosted_button_id=XQM2LB4UC8V2J" target="_blank">
-    <img src="assets/images/paypal.png"></a>'
-  - title: "Sponsorship"
-    excerpt: "Please contact *secorp at secorp dot net* if you would like to sponsor Tahoe-LAFS."
-  - title: "Least Authority"
-    excerpt: '<a href="https://leastauthority.com/community-matters/open-source-development/" target="_blank">Least Authority</a> sells service and support for LAFS as well as developing improvements for LAFS and contributing them back to the Free and Open Source project.'
-  - title: "Google"
-    excerpt: 'Google, Inc. sponsored Tahoe-LAFS through its <a href="https://www.google-melange.com/archive/gsoc/2010/orgs/tahoe_lafs" target="_blank">Google Summer of Code</a> program in 2010 and 2013.<br/>'
-  - title: "Atlas Networks"
-    excerpt: '<a href="https://atlasnet.com/" target="_blank">Atlas Networks</a> provides dedicated server hosting for scale and performance testing.<br/>'
+    image_path: /assets/images/aboutus.png
+    alt: "aboutus"
+    excerpt: >-
+      Tahoe-LAFS is an open-source project supported by donations
+      and maintained by a group of hardy volunteers.
+      We are grateful for their energy, expertise, and support.
+      Check out some of the main contributors to this project!
 ---
 <div id="documentation">
 {% include feature_row id="documentation" type="center" %}
@@ -117,8 +103,7 @@ about_list:
   {% endfor %}
 </div>
 </div>
-
+<br/><br/>
 <div id="about">
-{% include feature_row id="about" type="center" %}
-{% include feature_row id="about_list" %}
+{% include feature_row id="about" type="left" %}
 </div>