Hey, I emailed you but I figured I would post my response here too. This is an odd problem. Normally I would just right click a layout tab and choose "rename" but in 2013 this does not work for me.
If you use the layout tabs (like in previous versions) you can double click the layout name and then type the new name.
If you use the layout quickview then renaming is as simple as clicking the quickview button and then clicking the layout name you want to change.