The URL path of a newly created site collection will include “/_layouts/15/start.aspx” To avoid this it is necessary to deactivate the following site feature:
1. Go to Site Settings – Site Features page.
2. Deactivate the “Minimal Download Strategy” feature.
Why is the Minimal Download Strategy available by default on various site collection templates including the Team Site? This is a new feature for SharePoint 2013 that is designed to increase the performance of the SharePoint site.
For a full explanation please read Wictor Wilen’s Blog post here: http://www.wictorwilen.se/sharepoint-2013—introduction-to-the-minimal-download-strategy-mds