removed not unique warning from attributes dialog as it's more common to have multi value

src/public/javascripts/dialogs/attributes.js

@@ -208,24 +208,6 @@ function AttributesModel() {
         attribute.valueHasMutated();
     };
 
-    this.isNotUnique = function(index) {
-        const cur = self.ownedAttributes()[index]();
-
-        if (cur.name.trim() === "") {
-            return false;
-        }
-
-        for (let attributes = self.ownedAttributes(), i = 0; i < attributes.length; i++) {
-            const attribute = attributes[i]();
-
-            if (index !== i && cur.name === attribute.name && cur.type === attribute.type) {
-                return true;
-            }
-        }
-
-        return false;
-    };
-
     this.isEmptyName = function(index) {
         const cur = self.ownedAttributes()[index]();
 

src/views/index.ejs

@@ -620,7 +620,6 @@
                 <td>
                   <!-- Change to valueUpdate: blur is necessary because jQuery UI autocomplete hijacks change event -->
                   <input type="text" class="attribute-name form-control" data-bind="value: name, valueUpdate: 'blur',  event: { blur: $parent.attributeChanged }"/>
-                  <div style="color: yellowgreen" data-bind="if: $parent.isNotUnique($index())"><span class="glyphicon glyphicon-info-sign"></span> Duplicate attribute.</div>
                   <div style="color: red" data-bind="if: $parent.isEmptyName($index())">Attribute name can't be empty.</div>
                 </td>
                 <td>