Make rate limiting a function of the number of users

Running of API limits becomes annoying quickly.
Add ignore rule for vim swapfiles
Python's sleep is second based, not minute-based (silly pat)
Merge pull request #4 from ppannuto/ignore

Add ignore rule for vim swapfiles
Merge pull request #3 from ppannuto/rate_limit

Make rate limiting a function of the number of users
Better handling of db for threaded webserver
Merge pull request #5 from bradjc/master

Better DB for Threads
took out db name hardcoding
Merge branch 'master' of github.com:wwhuang/fitbit_leaderboard
Fixed merge
Conflicts:
	fitbit_leaderboard.py
took out show users testing command
fixing some db typos and scaling up fitbit leaderboard graphic
temporary hardcoded font size
fixing brad's periodic db update
fixing html bugs
commiting init file for db module
fixing brad's db stuff for adding users
removing some debugging stuff
took off debug in app.run()
changin permissions
trying to add global jinja variable