use configured port number to load javascript
more comments & fix variable name in settings.py
Merge pull request #1 from baris/check_sites_js

From Jon Madden: Make check_sites_bookmarklet.js work better with non-production environments
Merge remote-tracking branch 'yelp/master'

Conflicts:
	core/settings.py
verify_urls settings is replaced by check_sites_bookmarklet