Website broke!

My website is stored at http://www.jessemelanson.com/jessejosephart

I am using the GT3 Pure Theme

I went into my general settings tab and changed the website address and wp address in those fields and my website now doesn’t appear (as you can see if you click the link above)

Can anyone help me restore my page? The content all seems to be up on the server but it appears that its not loading the theme, links content etc…

Thank you!