Fix select property default value

src/demo.js

@@ -754,9 +754,9 @@ require(['config/require-config'], function() {
 											name: 		'Shadow type',
 											property: 	'shadow-type',
 											type: 		'select',
-											defaults: 	' ',
-											list:		[ { value : ' ', name : 'Outside', },
-											        	  { value : 'inset', name : 'Inside', }],
+											defaults: 	'',
+											list:		[ { value : '', name : 'Outside', },
+											        	{ value : 'inset', name : 'Inside', }],
 										}],
 						},{
 							name		: 'Background',

src/style_manager/view/LayerView.js

@@ -79,7 +79,7 @@ define(['backbone', 'text!./../templates/layer.html'],
 			var lim = 3;
 			var nV = '';
 			props.each(function(p, index){
-				var v = aV[index];
+				var v = aV[index] || '';
 				if(v){
 					if(p.get('type') == 'integer'){
 						var vI	= parseInt(v, 10),

test/specs/style_manager/view/PropertySelectView.js

@@ -161,6 +161,26 @@ define([path + 'PropertySelectView', 'StyleManager/model/Property', 'DomComponen
                 view.model.get('value').should.equal(defValue);
               });
 
+              it('Empty value as default', function() {
+                options = [
+                    {value: 'test1value', name: 'test1'},
+                    {value: 'test2value', name: 'test2'},
+                    {value: '', name: 'TestDef'}
+                  ];
+                component = new Component();
+                model = new Property({
+                  type: 'select',
+                  list: options,
+                  defaults: '',
+                  property: 'emptyDefault'
+                });
+                view = new PropertySelectView({
+                  model: model
+                });
+                $fixture.html(view.render().el);
+                view.$input.val().should.equal('');
+              });
+
               it('Input value is as default', function() {
                 view.$input.val().should.equal(defValue);
               });