Uncaught TypeError: Cannot read property 'split' of undefined. Crash when the value of widget 'timezone_mismatch' is false in form view.
The FieldTimezoneMismatch was redone, but an error was done after the last code review. With this commit, we fix the mistake (a function is properly called) and improve the test to make sure we catch such a regression later.
* display a warning when the timezone offset is not the same of the browser timezone offset * if different, display the time in the selected timezone