Hardcoded timezone example => Default time zone

Change the time zone example from a hard coded string to the default timezone to match EREditDatePopupOrNull otherwise you have PST on the page with the local timezone if you happen to need both components in the same page. Confusing.
![Desired behaviour](https://f.cloud.github.com/assets/690901/207881/13de4218-8202-11e2-9e25-66f90a54aa2d.png)