fix cors domain for Lesson
Merge branch 'master' of github.com:pavel-r/jmanual
Merge branch 'master' of github.com:pavel-r/jmanual
Merge branch 'master' of github.com:pavel-r/jmanual
Merge branch 'master' of github.com:pavel-r/jmanual
Merge branch 'master' of github.com:pavel-r/jmanual