Issue Summary

When adding a card via Trello For Gmail, the due date defaults to 01/01/1970

Steps to Reproduce

1. Select 'Add to Trello' icon from Gmail apps menu
2. From add card screen, due date's default value is 01/01/1970

Expected Results

Due date is blank and awaiting input - e.g. DD/MM/YYYY.

Actual Results

Due date defaults to 01/01/1970.

Workaround

Manually type in the desired date and hit enter to save, or manually use date picker.