preferences add java doc

Clide/src/preferences/ClidePreferenceConstants.java

 package preferences;
 
+/**
+ * Interface for keeping the Preference Constants.
+ * Should eventually be replaced by final class with static attributes as this is bad style.
+ * 
+ * @author CLIDE 2018-2019
+ */
+
 public interface ClidePreferenceConstants {
 	
-	/**
-	 * Interface for keeping the Preference Constants.
-	 * Should eventually be replaced by final class with static attributes as this is bad style.
-	 */
 
-	
 	String PREFERENCE_ID = "Clide.preferences";
 	
 	String CPM_LOCATION = "CPM Location";