#1869 and ensure naming

Signed-off-by: a <a>

src/main/resources/application.properties

@@ -30,6 +30,7 @@ spring.devtools.livereload.enabled=true
 
 spring.thymeleaf.encoding=UTF-8
 
+spring.web.resources.mime-mappings.webmanifest=application/manifest+json
 
 spring.mvc.async.request-timeout=${SYSTEM_CONNECTIONTIMEOUTMILLISECONDS:1200000}
 #spring.thymeleaf.prefix=file:/customFiles/templates/,classpath:/templates/