feature no-video quantums
Merge pull request #26 from kaleidos/feature-novideo-quantums

feature no-video quantums
Fix bug related to retrieve solutions of homeworks and exams
Bugfix when editing units, wrong check of media content id
Update documentation. SAML configuration
More SAML documentation
Improve gravatar url generation

Avoid adding an empty 'default' GET parameter to the src of the
image, it was making Gravatar fail.
Merge branch 'master' into feature-assets