integrate jquery and bootstrap

- used a test page to test it under wedding site
- created a "global" lib/static/ directory above individual projects so that these
  things can be used in any project (site, app, etc.)
- modified wedding settings so django can find the global static directory and properly use
 collectstatic django manage command, which collects all static files needed for the site under a directory
defined in settings (I made it "s/" for now)