cleanup and javadoc for remaining files in onos.core.intent

Change-Id: I3bfe85579daa4bb35be6133b3221fabd80b10e00
diff --git a/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java b/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java
index 7691c68..5f9154f 100644
--- a/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java
+++ b/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java
@@ -3,11 +3,19 @@
 import java.util.LinkedList;
 
 /**
- * @author Toshio Koide (t-koide@onlab.us)
+ * This class is simply a list of IntentOperations. It exists so
+ * that IntentOperations can be serialized for notifications and persistence.
  */
 public class IntentOperationList extends LinkedList<IntentOperation> {
     private static final long serialVersionUID = -3894081461861052610L;
 
+    /**
+     * Add an operator and Intent to the list.
+     *
+     * @param op operator for the Intent
+     * @param intent the Intent
+     * @return true
+     */
     public boolean add(IntentOperation.Operator op, Intent intent) {
         return add(new IntentOperation(op, intent));
     }