Fix Nginx cache and force cache buster on JavaScript

_includes/footer.html

@@ -5,4 +5,4 @@
 <script src="assets/js/breakpoints.min.js" defer></script>
 <script src="assets/js/util.min.js" defer></script>
 <script src="assets/js/exif.min.js" defer></script>
-<script src="assets/js/main.min.js" defer></script>
+<script src="{{ site.baseurl }}/assets/js/main.min.js?v={{ site.time | date: '%s' }}" defer></script>

nginx.conf

@@ -18,7 +18,7 @@ server {
     # Caching fuer Bilder und Assets
     location ~* \.(jpg|jpeg|png|gif|svg|ico|css|js|woff|woff2|ttf|eot|otf|webp)$ {
         expires 30d;
-        add_header Cache-Control "public, immutable";
+        add_header Cache-Control "public, no-cache";
     }
 
     # SPA-Fallback