initial attempts to add user authentication
Fix passport-local dependency version
Upgrade angular to 1.1.5
Add initial user signup and login

Note: The logout does not work as expected
Add userService with global user headline
Add list of users filestops
Add pill-nav for header
Dialogify login and signup page
fixed bracketing typo
Added home button and "New Filestop" Button in the My Filestop view
Simplified UI: filestop creation always only one click away
Signup fails if the email is already registered
Fixed "Start a New Filestop" in "My Filestops" view
Fixed user email display in nav-bar
Fixed proper handling of sign-up email conflicts (it's asynchronous programming, dude!)
Fixed deletion of Filestops in "My Filestops" view
Fixed automatic deletion of expired Filestops (was missing callback function)
Properly printing whether a filestop is expiring or not in "My Filestops" view
Change filestop schema with _userId as ObjectId
Fix api paths for user authentication