run flexslider in tabs

Marilyn, I've updated the javascript to run inside multiple tabs. When making the slideshows, instead of using IDs like `carousel` or `slider`, instead use classes, `.slider` and `.carousel`.

Design doesn't look great, but the functionality is there. What I would try to do is make 1 item look good, and then apply the slide show stuff. **Let me know if you need more help**.

- add javascript functionality to show mutliple flexsliders within tabs
- change css for slideshow and carousel to classes, since there will
  be more than one.