Comment out uneeded Guard configs.

This three configurations conflicted with the rails 4 testing
framework, so when you modified a file it didn't run the proper test.
That's solved now.
Create teams and apply it's migration.

The teams are going to be the responisbles for the projects.
The test for the teams.
Update the user fixtures.
Add the realationship between Teams and Users.

This commit includes a migration to add a column on our database, the
relationships and a couple of tests just to be sure.