INT-2964 Various JavaDoc Fixes

INT-2964 - JavaDoc: <emphasis> should be <em>

INT-2964 - JavaDoc: <p/> should be <p>

INT-2964 - JavaDoc polishing

* <li></li> should be wrapped in <ul></ul>
* wrap code snippets in {@code myCode()}
* change <code>false</false> to <code>false</code>

INT-2964 - Polish - Fix more JavaDoc errors

* Mockito-all dependency causes JavaDoc error. Change dependency to Mockito-Core.

spring-integration-http/src/test/java/org/springframework/integration/http/config/OutboundResponseTypeTests.java

@@ -51,8 +51,8 @@ import com.sun.net.httpserver.HttpServer;
  * @author Gary Russell
  * @since 2.2
  *
- *         <p/>
- *         see https://jira.springsource.org/browse/INT-2397
+ * <p>
+ * see https://jira.springsource.org/browse/INT-2397
  */
 @ContextConfiguration
 @RunWith(SpringJUnit4ClassRunner.class)