Add default LRS (EWD-24074 - Tracking and Tracing)
Fix bug with slider background and xapi text
Update hint for track and tracing settings
Change xApi reporting: add context with course id for each xApi statement.
Fix bug with warning message in small resolution
Merge branch 'master' of https://github.com/ivanmuzika/quiz.git
Merge pull request #35 from ivanmuzika/master

Change tracking and tracing to support easygenerator reporting.