[IMP] : Creating a model from the vehicles form view, what you have type...

...d is not in the modal window

[FIX] : traceback when saving a vehical form first time with odometer value
[IMP] vehical cost : parent field put in technical feature
[IMP] contract: date field is too wide
https://www.odoo.com/web#id=10560&view_type=form&model=project.task&action=327
pad: https://pad.odoo.com/p/r.YE8VK5ykC4W6ZppZ
Sorry for the previous comments actually the changes are for this fix.

![fix for this](https://cloud.githubusercontent.com/assets/5112424/5355264/82e3ffae-7fb7-11e4-8ade-53ed53b3033e.png)