Contact page creation and test cases.
Dry out titles in test cases.
Development using postgresql.

Altered the database configuration to use postgresql.
Updated the Gemfile to install pg in dev.
* This requires libpq-dev to work.
Remove Home Page custom title.

This adds in a new helper for setting titles, yielding different titles
based on whether or not custom data is passed in, and test cases for the
Home Page title.  It also corrects an issue in the database
configuration.