[html5] Offline apps

[Ilkka Huotari]

> you should update the cache manifest (version)

I've been trying to do it like that, but there are problems. First,
the biggest problem seems to be that a page reload seems to be needed
(two page loads).

The second problem is that it's a bit of a hack, in my opinion. I
think what it does is make caching more complex and work a little bit
worse (see the problem #1)...

Maybe I'm doing it wrong though. I don't know. That's why I'm asking about it...

Ilkka