Return from redirect so that it works with testing

Signed-off-by: Prashant Shah <prashah360@gmail.com>
Add category model

Signed-off-by: Prashant Shah <prashah360@gmail.com>
Add test data for goal and category model

Signed-off-by: Prashant Shah <prashah360@gmail.com>
Add tests for Goals controller

Signed-off-by: Prashant Shah <prashah360@gmail.com>