Upgrading app to 2.1.0b2 via sencha tools forgets app.css

[jeroenwalter]

I've originally created my ST 2.0 app via the sencha tools.
Now when I upgraded to 2.1.0b2 via the same sencha tools via 'sencha app upgrade etc.' my app no longer displayed anything, while I could see that all data was loaded. It only showed a grey screen.
As it turned out, this is caused by the upgrade process that didn't upgrade the app.css in the resources folder.

I don't know if this should be considered a bug, as some people may modify the app.css to their needs, but I think that at least some kind of warning should be displayed.

[Jamie Avins]

We'll look into forcing it to compile instead of relying on the compass cache check.

[b0bben]

config.rb in the "sass" folder needs to be updated as well. It's looking for the SDK in the old folder ("sdk") instead of the new one ("touch").

Compass won't be able to compile the new file without the above.

//b0bben