add secure password to admin model
adding secure password to guides and captains
refactored auth code into concern
I forgot some files
just checkin'
Added Sign-Up for Admin Users

Added tests modeled after MHs Tutorial. Also added routes and controller
actions, just for the admin user. Furthermore, changed the css somewhat.
Add database.yaml to .gitignore
Merge branch 'add-sessions'

Conflicts:
	.gitignore
	app/views/layouts/application.html.erb
Yep.