Added Relationship model.
Added Relationships controller with index and show actions.
Added create and new methods.
Fixed displaying of relationships on main page.
Fixed some styling for the relationship index.
Removed some defaulted text on home page.
Added relationships dropdown to navbar.
Implemented relationship show action.
Added show view for relationships.

This uses an overview partial view so it can be duplicated on the index and show pages.
Converted index buttons to a link (for home page).
Added simple help text if no relationships are defined.
Centered relationship buttons, add relationship buttons, and overview on show view.
Fixed add relationship modal dialog with jquery-modal-rails.
Fixed some styling with the new relationship form.
I think this is the required order.

If modal is above ., the modal doesn't show (just a black screen).
Added relationship destroy functionality.

Right now this is only possible through the relationship show page.
Removed unnecessary destroy js file.
Fixed add relationship modal so it refreshes main page.

This is done through turning off the remote: true for the modal, since this is the only place where a new relationship is created (currently).
Added edit action with supporting pages.

Editing will popup as a modal, and is available in the show page.
Wrote a few tests, needs more later.