Tabzilla Fix and Layout Modifications.

I fixed the Tabzilla problem, the script for Tabzilla was missing. Added that. But I haven't completely localized that. The Tabzilla css is still not the local css but the one on mozorg.cdn..

I have also made a few layout changes like removing some inline CSS codes, fixing margins, etc.

Verify the code and merge the changes into the original repo. :)

Cheers,
shine ;)