Merge branch 'refactor-security' into 'development'

...java/nl/tudelft/ewi/queue/GlobalMethodSecurityConfig.java

...ava/nl/tudelft/ewi/queue/controller/CourseController.java

.../java/nl/tudelft/ewi/queue/controller/HomeController.java

...i/queue/dialect/AuthenticatedExpressionObjectFactory.java

...a/nl/tudelft/ewi/queue/resolver/UserArgumentResolver.java

...udelft/ewi/queue/security/GlobalMethodSecurityConfig.java

...ain/java/nl/tudelft/ewi/queue/security/UserPrincipal.java

.../nl/tudelft/ewi/queue/security/dev/DevSecurityConfig.java

...tudelft/ewi/queue/security/dev/DevUserDetailsService.java

...t/ewi/queue/security/prod/SAMLUserDetailsServiceImpl.java

...udelft/ewi/queue/security/prod/SamlWebSecurityConfig.java

.../java/nl/tudelft/ewi/queue/service/PermissionService.java

...a/nl/tudelft/ewi/queue/service/PermissionServiceTest.java