CSSRequestsValidator and CSSFacter
JSFacter and JSRequestsValidator
ImageFacter, ImageRequestsValidator and ImageWithoutAltAttributeValidator
AnchorWithoutAnyTextValidator
BodyFacter and BodyValidator
HeadFacter
SchemaOrgItemTypeValidator
LinkWithRelCanonicalValidator
LinkWithRedirectValidator
LinkWithRelNofollowValidator
Fixed JSRequestsValidator: get_requests_js_message
Fixed TestReviewDAO: test_can_add_violation
Fixed TestCSSFacter

Added test_can_get_fact_definitions
Fixed TestCSSRequestsValidator

Added test_can_get_violation_definitions
Fixed TestJSFacter

Added test_can_get_fact_definitions
Fixed TestJSRequestsValidator

Added test_can_get_violation_definitions
Fixed TestTitleFacter

Added test_can_get_fact_definitions
Fixed TestImageFacter

Added test_can_get_fact_definitions
Fixed TestLinksFacter

Added test_can_get_fact_definitions
Fixed TestMetaTagsFacter

Added test_can_get_fact_definitions