Add filter to make sure only admin can create or destroy nodes
Add filter to make sure only admin can create or destroy nodes; Change redirect to links to root because we no longer view partial tree
Don't need to set count explicitly
Add attr_accessor :parent to allows mass-assignment of Node's parent
Seed default data to Node, Resource and User for testing
Fix rspec tests to accomodate Calnet CAS
Add tests for UserController
Before each good tests, make an admin and mock the filter to return an admin
Add comment about test 'GET node/index'