Add start / stop methods to the Cordova compass

This fixes #721
The Chrome extension UI should have same font as the main UI.

This was pointed out in GitHub Issue:

    https://github.com/blackberry/Ripple-UI/issues/698
"Ripple Services" in popup should be a (smaller sized) h1.

This updates the h1 font size to be smaller and relatively
closer to other headers.

Pointed out in GitHub Issue:

    https://github.com/blackberry/Ripple-UI/issues/698

Also, in the non RIM distribution, Ripple Services was still in
an 'h2' tag, vs in an 'h1' tag (like in the RIM distro). This
makes things the same.