Moved `ng-repeat` to the `umb-node-preview` directive
Moved `ng-repeat` to the `umb-node-preview` directive

Instead of calling `umb-node-preview` directive for each link,
we can pass all the links to it.  This will then add the link separators.

The `sortableOptions` are still handled from the parent container.

rasmusjp/umbraco-multi-url-picker,rasmusjp/umbraco-multi-url-picker,rasmusjp/umbraco-multi-url-picker