add authorization
add permissions
add permissions
Merge branch 'g19_ypa__Google_Drive_integration' of https://github.com/MikeAndrianov/easy_learning into g19_ypa__Google_Drive_integration
Refs #19 - Google Drive Integration

Added controllers for all user types, changed routes, added css
Add 'uploaded_by' column
resolved conflicts between master and g19
Merge pull request #19 from MikeAndrianov/g19_ypa__Google_Drive_integration

Google Drive integration