Renamed the property-editor directive to "umb-property-editor"

As this is the preferred directive name within Umbraco core:
https://github.com/umbraco/Umbraco-CMS/blob/release-7.4.0/src/Umbraco.Web.UI.Client/src/common/directives/components/property/umbpropertyeditor.directive.js#L40

src/Our.Umbraco.InnerContent/Web/UI/App_Plugins/InnerContent/views/innercontent.dialog.html

@@ -7,7 +7,7 @@
             <umb-tab id="tab{{tab.id}}" ng-repeat="tab in item.tabs" rel="{{tab.id}}">
 
                 <umb-property ng-repeat="property in tab.properties" property="property">
-                    <umb-editor model="property"></umb-editor>
+                    <umb-property-editor model="property"></umb-property-editor>
                 </umb-property>
 
             </umb-tab>