Added mongodb to package file.
Fixed style padding and header margin/padding.

Restored a 20px padding to the body style.  Added a corresponding -20px
margin to the header, and set width to auto — this allows the header to
“override” the padding of the parent.
Removed Jade Mixin and added font awesome

Added a title block with font awesome logo to login and register
templates.  Added font awesome stylesheet via CDN to layout template.