refactor: small updates and improvements in HTTP Basic lesson (#2024)

* refactor: cleanup attack result and builder

* refactor: solve compiler warnings

* feature: improve HTTP basics lesson

Closes: #494

src/main/java/org/owasp/webgoat/container/i18n/Language.java

@@ -13,9 +13,6 @@ import org.springframework.web.servlet.LocaleResolver;
 /**
  * Wrapper around the LocaleResolver from Spring so we do not need to bother with passing the
  * HttpRequest object when asking for a Locale.
- *
- * @author nbaars
- * @date 2/7/17
  */
 @AllArgsConstructor
 public class Language {

src/main/java/org/owasp/webgoat/container/i18n/PluginMessages.java

@@ -11,9 +11,6 @@ import org.springframework.core.io.support.ResourcePatternResolver;
 
 /**
  * Message resource bundle for plugins.
- *
- * @author nbaars
- * @date 2/4/17
  */
 public class PluginMessages extends ReloadableResourceBundleMessageSource {
   private static final String PROPERTIES_SUFFIX = ".properties";