All versions of Sweet Payin

* Bug: Expired authentication token caused app to hang, requiring uninstall and reinstall. Fixed now; the app takes the user to the sign-in screen without hanging. * Bug: App would reload offers list continuously if HTTP error was received from server. Fixed now; app gives an error message. * Maintenance change: URLs for web service and static resources now point to new servers, use CDN: performance and reliability increase * Feature: added password reset facility if user has forgotten password.