Fixed "user-dialog" dashboard markup

The logic in the markup was previously incorrect.
I changed the check from `tab.length` to `dashboard.length`.

The custom dashboard's label isn't `.caption` and it's per dashboard,
not per "property".

Lastly, `.path` should be `.view`.

Resolves #6417

src/Umbraco.Web.UI.Client/src/views/common/overlays/user/user.html

@@ -130,13 +130,11 @@ <h5>
 
     </div>
 
-    <div class="umb-control-group" ng-if="tab.length">
+    <div class="umb-control-group" ng-if="dashboard.length > 0">
         <div ng-repeat="tab in dashboard">
+            <h5 ng-if="tab.label">{{tab.label}}</h5>
             <div ng-repeat="property in tab.properties">
-                <div>
-                    <h3 ng-if="property.caption">{{property.caption}}</h3>
-                    <div ng-include="property.path"></div>
-                </div>
+                <div ng-include="property.view"></div>
             </div>
         </div>
     </div>