Fix formatting and documentation in util package

git-svn-id: svn://sunsvr01.isp.uni-luebeck.de/swproj13/trunk@169 72836036-5685-4462-b002-a69064685172

src/jrummikub/util/Connection.java

@@ -1,5 +1,11 @@
 package jrummikub.util;
 
+/**
+ * A Connection object can be used to remove a listener from a event
+ */
 public interface Connection {
+	/**
+	 * Removes the listener
+	 */
 	public void remove();
 }

src/jrummikub/util/IEvent.java

@@ -7,6 +7,7 @@ public interface IEvent {
 	 * 
 	 * @param listener
 	 *            target listener
+	 * @return a connection to remove the listener
 	 */
 	public Connection add(IListener listener);
 

src/jrummikub/util/IEvent1.java

@@ -12,6 +12,7 @@ public interface IEvent1<T> {
 	 * 
 	 * @param listener
 	 *            target listener
+	 * @return a connection to remove the listener
 	 */
 	public Connection add(IListener1<T> listener);
 

src/jrummikub/util/IEvent2.java

@@ -14,6 +14,7 @@ public interface IEvent2<T1, T2> {
 	 * 
 	 * @param listener
 	 *          target listener
+	 * @return a connection to remove the listener
 	 */
 	public Connection add(IListener2<T1, T2> listener);