added validations on user model
first test for model done
more tests for user validations
validation tests done
associations tested for users
mass assignment user tests done
added association tests for groups
added mass assignment tests for groups
mass assignment tests for games
validations and tests, made it to events
fixed the tests due to validations
finsihed mass assignment tests for groups
Merge pull request #32 from fence-lizards-2014/validations_with_tests

Validations with tests - Reviewed by Jake. We need to fix AR associations so that tests pass