Comment 19 for bug 619816

The attached patch changes the output to 0h04m in the menu and now once again says 0 hours 30 mins in the preferences

I've also made the xhxxm string translatable, but this needs to be picked up by translators, possibly too late for that :/

I can remove the string change and go back to 0:04 instead quite easily.

This also kills the estimating case as it seems to be incorrect, and just displays a percentage instead.