New template's fixes - DefaultName changed, VS2014 support

DefaultName's now are like in XNA 4.0 + VS2014 templates pushed to installer.
What is Visual Studio 2014?  Do you mean this...

 http://www.visualstudio.com/en-us/downloads/visual-studio-14-ctp-vs

I'm not sure if we should promise to add support to preview releases of VS.  @KonajuGames @Nezz @danzel ??