Post invoice dialog default focus

[Geert Janssens]

In my workflow the post date is rarely the actual date I am performing the 
post action.

So for practically each invoice I post, I manually have to click in the date 
field to change the post date.

Are there any objections to change the default focus in this window from the 
description field to the post date ? This would greatly simplify my invoice 
input.

Geert