update mozilla logo
update for new mozilla logo
udpate for page view
update for main speaker
Sencha, Inc. slides.

 * new file:   talks/Sencha, Inc./Pope, Jeff - The Future of the Enterprise Web App.pdf
 * new file:   talks/Sencha, Inc./README.md
 * new file:   talks/Sencha, Inc./Stoelzle, Stefan - The 90 Minute App.pdf
Merge pull request #14 from stoe/master

Thank you for your contribution!
update for main page new