Use sameorigin on koel

src/freedombone-app-koel

     echo '}' >> $koel_nginx_site
 
     sed -i 's|gzip_types.*|gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript application/json;|g' $koel_nginx_site
+    sed -i 's|DENY;|SAMEORIGIN;|g' $koel_nginx_site
 
     function_check configure_php
     configure_php