Add RSS icon to nav and fix feed to full content

- Add RSS feed icon link in navigation bar with responsive sizing
  (20px mobile, 25px desktop) via .rss-icon class
- Remove excerpt_only from feed config so feed serves full post HTML
- Rebuild and verify feed.xml contains <content type="html"> tags

Author: jacdevos

_config.yml

@@ -29,7 +29,6 @@ remote_theme: chesterhow/tale
 
 # Feed settings
 feed:
-  excerpt_only: true
   posts_limit: 50
 
 # Build settings

_includes/navigation.html

@@ -23,6 +23,11 @@
           <path d="M22.65 14.39L12 22.13 1.35 14.39a.84.84 0 01-.3-.94l1.22-3.78 2.31-7.15A.47.47 0 014.82 2c.14-.05.28-.05.42 0a.51.51 0 01.2.15.5.5 0 01.1.57l1.63 5.06h9.78l1.63-5.06a.5.5 0 01.56-.36.5.5 0 01.28.21l2.31 7.15 1.22 3.78a.84.84 0 01-.3.94z"/>
         </svg>
       </a>
+      <a href="{{ '/feed.xml' | prepend: site.baseurl }}" class="nav-social-link" aria-label="RSS Feed">
+        <svg class="rss-icon" viewBox="0 0 24 24" fill="currentColor">
+          <path d="M6.18 17.82a2.18 2.18 0 1 0 0 4.36 2.18 2.18 0 0 0 0-4.36zM5 12a7 7 0 0 1 7 7h2.5a9.5 9.5 0 0 0-9.5-9.5V12zm0-5a12 12 0 0 1 12 12h2.5A14.5 14.5 0 0 0 5 4.5V7z"/>
+        </svg>
+      </a>
 
     </div>
   </div>

assets/main.scss

@@ -56,6 +56,11 @@ html, body {
       text-decoration: none;
       transition: all 0.2s ease;
 
+      svg.rss-icon {
+        width: 20px;
+        height: 20px;
+      }
+
       @media (min-width: 600px) {
         height: 48px;
         width: 48px;
@@ -64,6 +69,11 @@ html, body {
           width: 24px;
           height: 24px;
         }
+
+        svg.rss-icon {
+          width: 25px;
+          height: 25px;
+        }
       }
 
       &:hover {