revert simple choice fix
ugly fix to unit menu on small screens
warn on more browsers
fix #427
show addicional material in lesson page
fix identation
fix activities issues in course page
move course material modal
fix lesson description
fix editing course structure
fix #433 color link of side notes lesson
Merge branch 'master' of github.com:hacklabr/timtec
remove text limitation in lesson description
fix #434
Merge branch 'master' of github.com:hacklabr/timtec
fix #426
Merge remote-tracking branch 'origin/434-stats-page-bug'
fix #435 login box size on small screens
Merge