Fix a doctest for method trait_points
Add tests for Spell and HitLocation models
Fix incorrect tests in module `test_views`

Tests were running with '_method' set to 'PUT', whereas '_method' should have
been set to 'DELETE'.
Add tests for all of the character-related views

Paths tested include:
* character/
* character/create-form/
* character/<id>/
* character/<id>/update-form
* character/<id>/delete-form