Use password auth for ubuntu machines [#74]

It appears that having a password in database.yml, but not having one
in your postgres user, is fine. So we'll use password auth on ubuntu and
continue using passwordless (which works on Postgres.app installs) on
OSX.
Fix a problem loading spork
Fix a warning during bundle
Merge pull request #77 from AndrewLorente/misc-fixes

Assorted minor test fixes
Merge pull request #76 from AndrewLorente/ubuntu-postgres-setup

Use password auth for ubuntu machines [#74]
Add Exception Notification gem and configure it for production to resolve issue #52
Merge branch 'master' of https://github.com/code-scouts/green_mercury into exception_notification
Update rake version; should fix travis
Merge branch 'master' into exception_notification
Merge pull request #78 from shawnacscott/exception_notification

Add Exception Notification gem and configure it for production

Fixes #52
Merge branch 'master' into projects

Conflicts:
	Gemfile
Fix an error when running specs under spork
Delete some defunct tests
Restore phantomjs gem

The phantomjs Gem interfered with the phantomjs that was pre-installed
on Epicodus machines, which was a significant problem when most
development was being done on Epicodus machines. Now our Epicodus
session's over, so restore it.
Merge pull request #1 from AndrewLorente/projects

Fix merge conflicts and some test cleanup