#BAEL-100 tests and update spring boot to 1.5.1.RELEASE (#1135)

* add tests for #BAEL-100 and upgrade spring boot to 1.5.1.RELEASE

* uncomment integration test configurations

spring-boot/src/main/java/com/baeldung/webjar/WebjarsdemoApplication.java

@@ -0,0 +1,13 @@
+package com.baeldung.webjar;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
+
+@SpringBootApplication
+public class WebjarsdemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(WebjarsdemoApplication.class, args);
+    }
+}