Fixining all the javadoc issues preventing the release

In order to perfom a Sonatype OSS release, all the javadocs must pe corretly and completely parsed in order to pass the release requirement.
This comment is only adding "comments' pertaining to javadoc. NO CODE HAS BEEN CHANGED

Signed-off-by: Doug Morato <dm@corp.io>

webgoat-container/src/main/java/org/owasp/webgoat/plugins/Plugin.java

@@ -22,6 +22,7 @@ import static org.owasp.webgoat.plugins.PluginFileUtils.replaceInFiles;
  * <p>Plugin class.</p>
  *
  * @version $Id: $Id
+ * @author dm
  */
 public class Plugin {
 
@@ -34,6 +35,11 @@ public class Plugin {
     private List<File> pluginFiles = Lists.newArrayList();
     private File lessonSourceFile;
 
+    /**
+     * <p>findLesson.</p>
+     *
+     * @param classes a {@link java.util.List} object.
+     */
     public void findLesson(List<String> classes) {
         for (String clazzName : classes) {
             findLesson(clazzName);
@@ -56,6 +62,11 @@ public class Plugin {
         }
     }
 
+    /**
+     * <p>loadFiles.</p>
+     *
+     * @param file a {@link java.nio.file.Path} object.
+     */
     public void loadFiles(Path file) {
         if (fileEndsWith(file, ".html") && hasParentDirectoryWithName(file, NAME_LESSON_SOLUTION_DIRECTORY)) {
             solutionLanguageFiles.put(file.getParent().getFileName().toString(), file.toFile());

webgoat-container/src/main/java/org/owasp/webgoat/plugins/PluginExtractor.java

@@ -17,12 +17,23 @@ import java.util.zip.ZipFile;
 /**
  * Extract the jar file and place them in the system temp directory in the folder webgoat and collect the files
  * and classes.
+ *
+ * @author dm
+ * @version $Id: $Id
  */
 public class PluginExtractor {
 
     private final List<String> classes = Lists.newArrayList();
     private final List<Path> files = new ArrayList<>();
 
+    /**
+     * <p>extractJarFile.</p>
+     *
+     * @param archive a {@link java.io.File} object.
+     * @param targetDirectory a {@link java.io.File} object.
+     * @return a {@link org.owasp.webgoat.plugins.Plugin} object.
+     * @throws java.io.IOException if any.
+     */
     public Plugin extractJarFile(final File archive, final File targetDirectory) throws IOException {
         ZipFile zipFile = new ZipFile(archive);
         Plugin plugin = new Plugin();
@@ -88,11 +99,21 @@ public class PluginExtractor {
         return targetFile;
     }
 
+    /**
+     * <p>Getter for the field <code>classes</code>.</p>
+     *
+     * @return a {@link java.util.List} object.
+     */
     public List<String> getClasses() {
         return this.classes;
     }
 
+    /**
+     * <p>Getter for the field <code>files</code>.</p>
+     *
+     * @return a {@link java.util.List} object.
+     */
     public List<Path> getFiles() {
         return this.files;
     }
-}
+}

webgoat-container/src/main/java/org/owasp/webgoat/plugins/PluginFileUtils.java

@@ -16,6 +16,7 @@ import java.util.Collection;
  * <p>PluginFileUtils class.</p>
  *
  * @version $Id: $Id
+ * @author dm
  */
 public class PluginFileUtils {
 

webgoat-container/src/main/java/org/owasp/webgoat/plugins/PluginLoadingFailure.java

@@ -4,6 +4,7 @@ package org.owasp.webgoat.plugins;
  * <p>PluginLoadingFailure class.</p>
  *
  * @version $Id: $Id
+ * @author dm
  */
 public class PluginLoadingFailure extends RuntimeException {
 

webgoat-container/src/main/java/org/owasp/webgoat/plugins/PluginsLoader.java

@@ -27,6 +27,7 @@ import java.util.concurrent.Executors;
  * <p>PluginsLoader class.</p>
  *
  * @version $Id: $Id
+ * @author dm
  */
 public class PluginsLoader {