Hello, 

I migrated a dotnetnuke from arvixe to hostgator, the site is displaying properly but when someone logs in it shows lots of js problems.
I tracked the issue and found that the problem was on the file initwidget.js, apparently it has an unknown method 'endsWith'.
initwidget.js seems ok and its ending correctly with
 if (Sys && Sys.Application) {
    Sys.Application.notifyScriptLoaded();
}

this issue is causing lots of troubles to me so please help me solve it. 
The site is www.umt.edu.al, u can use the chrome js debugger [ctrl+shift+J]

thank you