Allow editing the date of an entry

[mpaluchowski]

Can we have the ability enabled to edit the date of an entry?

My most common mistake in logging (perhaps everyone's?) if logging to the wrong date. Usually when I log time on a date different then the one I'm logging for. It defaults to "today" and if I forget to select a different date, editing doesn't allow me to easily fix it. Instead, I need to delete and re-enter an entry.