Add mongod file
Change Mongo config to smallfiles

Mongo needs 3GB for journalling, but Cloud9's space limit doesn't allow it
so we need to run Mongo with --smallfiles config option instead.
Add mongodb connection config

No tested yet...
Add DB use for app
Add Userlist page
Add USerlist view
Change mongodb connection param
Change field name

The username was misspelled, so it didn't appear on the screen