some refactoring...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

ui (gen4)/features/filesystem.js

@@ -1198,6 +1198,8 @@ var FileSystemWriterUIActions = actions.Actions({
 						'export-preview-size'))
 
 		},
+		// XXX make this editable on open and remove "new" from history...
+		// XXX add "history" button...
 		'target_dir': function(actions, make, overlay){
 			return make(['To: ', 
 				function(){ return actions.config['export-path'] || './' }], 
@@ -1219,8 +1221,17 @@ var FileSystemWriterUIActions = actions.Actions({
 								// XXX ugly...
 								overlay.focus()
 							})
-					}]
+					}],
+					['histroy', widgets.makeNestedConfigListEditor(actions, overlay,
+						'export-paths',
+						'export-path',
+						{
+							new_button: false,
+							// XXX add 'edit' button...
+							//itemButtons: []
+						})],
 				]})
+				// XXX make this editable???
 				.on('open', 
 					widgets.makeNestedConfigListEditor(actions, overlay,
 						'export-paths',

ui (gen4)/features/ui-widgets.js

@@ -114,15 +114,19 @@ function(actions, list_key, options){
 						.push(txt)
 
 					// unique...
-					if(options.unique){
+					if(options.unique == null || options.unique){
 						actions.config[list_key] = actions.config[list_key]
-							.unique(options.unique !== true ? options.unique : undefined)
+							.unique(typeof(options.unique) == typeof(function(){}) ?
+								options.unique 
+								: undefined)
 					}
 
 					// sort...
 					if(options.sort){
 						actions.config[list_key] = actions.config[list_key]
-							.sort(options.sort !== true ? options.sort : undefined)
+							.sort(typeof(options.sort) == typeof(function(){}) ? 
+								options.sort 
+								: undefined)
 					}
 
 					// update the list data...