public ActionResult PostTermsAndConditions()
{
var identity = ((System.Security.Claims.ClaimsIdentity)User.Identity);
var claim = identity.FindFirst("TermsAndConditionsAccepted");
((System.Security.Claims.ClaimsIdentity)User.Identity).RemoveClaim(claim);
((System.Security.Claims.ClaimsIdentity)User.Identity).AddClaim(new System.Security.Claims.Claim("TermsAndConditionsAccepted", "1"));
db.AcceptTermsAndConditions(User.Identity.GetUserId());
HttpContext.GetOwinContext().Authentication.SignOut(DefaultAuthenticationTypes.ExternalCookie);
HttpContext.GetOwinContext().Authentication.SignIn(identity);
return(RedirectToAction("Index"));
}