TinCan implementation for coach project
Fix extensions entry
Only send progressed and completed events when exercise is not proficient and answer has been correct
Fix accidental tuple on object name
Remove unused method for assessments
Fix media launch event
Add login_hint URL parameter to ensure an identity
Change Khan links
Merge branch 'tincan'
Update khan-exercises, add new english exercises
Update exercise tranlations
Remove console.log's from khan-exercise.js
Update iktel logo
Merge branch 'logo-update'
khan-exercises update working, missing related videos
merge master
Merge branch 'master' of https://github.com/PerceptumNL/KhanLatest