Provide a default reset stylesheet

[dj2]

Currently, if you create a new project, there can be large differences between how an element looks in iOS and in Chrome. A default stylesheet should be provided which resets all of the various elements and provides styling for consistency between the three platforms.

[mmocny]

We do bundle a default css stylesheet to emulate the chrome packaged app styles. Likely we are not getting those completely right, though.

Leaving this open to remember to investigate.