#4 Next try for http filter

dmnverifierfrontend/src/main/java/de/unikoblenz/fgbks/dmn/frontend/HttpFilter.java

@@ -22,8 +22,10 @@ public class HttpFilter implements ContainerRequestFilter {
     System.out.println(reqContext.getMethod());
     log(uriInfo, reqContext.getHeaders());
 
-    reqContext.abortWith(Response.noContent().build());
-    reqContext.setRequestUri(URI.create("/index.html"));
+    if (reqContext.getHeaders().getFirst("Accept").contains("text/html")) {
+      reqContext.abortWith(Response.noContent().build());
+      reqContext.setRequestUri(URI.create("/index.html"));
+    }
 
     System.out.println("-- request info --");
     uriInfo = reqContext.getUriInfo();