Add APNG file extension and MIME type

Fix #138

Author: LeoColomb

src/cross-origin/images.conf

@@ -9,7 +9,7 @@
 
 <IfModule mod_setenvif.c>
     <IfModule mod_headers.c>
-        <FilesMatch "\.(bmp|cur|gif|ico|jpe?g|png|svgz?|webp)$">
+        <FilesMatch "\.(bmp|cur|gif|ico|jpe?g|a?png|svgz?|webp)$">
             SetEnvIf Origin ":" IS_CORS
             Header set Access-Control-Allow-Origin "*" env=IS_CORS
         </FilesMatch>

src/web_performance/cache_expiration.conf

@@ -69,6 +69,7 @@
   # Media files
 
     ExpiresByType audio/ogg                             "access plus 1 month"
+    ExpiresByType image/apng                            "access plus 1 month"
     ExpiresByType image/bmp                             "access plus 1 month"
     ExpiresByType image/gif                             "access plus 1 month"
     ExpiresByType image/jpeg                            "access plus 1 month"

src/web_performance/filename-based_cache_busting.conf

@@ -13,5 +13,5 @@
 <IfModule mod_rewrite.c>
     RewriteEngine On
     RewriteCond %{REQUEST_FILENAME} !-f
-    RewriteRule ^(.+)\.(\w+)\.(bmp|css|cur|gif|ico|jpe?g|m?js|png|svgz?|webp|webmanifest)$ $1.$3 [L]
+    RewriteRule ^(.+)\.(\w+)\.(bmp|css|cur|gif|ico|jpe?g|m?js|a?png|svgz?|webp|webmanifest)$ $1.$3 [L]
 </IfModule>