Add JSON mime type to web.xml

src/main/webapp/WEB-INF/web.xml

@@ -62,6 +62,10 @@
 		<extension>manifest</extension>
 		<mime-type>text/cache-manifest</mime-type>
 	</mime-mapping>
+	<mime-mapping>
+		<extension>json</extension>
+		<mime-type>application/json</mime-type>
+	</mime-mapping>
 
 	<error-page>
 		<error-code>401</error-code>