[ONOS-3635] Implement List view for extended application properties

Change-Id: Ie8f985f9c2986857df92bcb47b5bdee876f37230
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/ApplicationResource.java b/web/gui/src/main/java/org/onosproject/ui/impl/ApplicationResource.java
index 398bfee..7601478 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/ApplicationResource.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/ApplicationResource.java
@@ -18,10 +18,15 @@
 import com.sun.jersey.multipart.FormDataParam;
 import org.onlab.rest.BaseResource;
 import org.onosproject.app.ApplicationAdminService;
+import org.onosproject.core.Application;
+import org.onosproject.core.ApplicationId;
 
 import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 import java.io.IOException;
@@ -41,4 +46,13 @@
         return Response.ok().build();
     }
 
+    @Path("{name}/icon")
+    @GET
+    @Produces("image/png")
+    public Response getIcon(@PathParam("name") String name) throws IOException {
+        ApplicationAdminService service = get(ApplicationAdminService.class);
+        ApplicationId appId = service.getId(name);
+        Application app = service.getApplication(appId);
+        return Response.ok(app.icon()).build();
+    }
 }