ObjectLevel security, updated Library and Tests

this commit is not for review, comments will be added and code will be
cleared with PEP8 rules, comments and old code will be removed
Merge branch 'master' of https://github.com/Michaluch/rivneITA003

Conflicts:
	learningtoday/src/models/model_tests.py
	learningtoday/src/views/courseview.py