add teacher performance tests
add fixtures teacher performance post
minor fixes to tests
minor fix to fixture
implement teacher performance monitoring
Merge branch 'feature/issue-119-rewrite-learner-performance' into feature/issue-120-rewrite-teacher-performance
add $'s
Merge branch 'develop' into feature/issue-120-rewrite-teacher-performance
Merge branch 'feature/issue-120-rewrite-teacher-performance' into develop