load analytics in ajax
optimize db query in analytic building
add index for analytic
add complexity for each question in Quiz Analytics
add group info in quiz analytic
add sort by name and group in quiz analytics
Make recursion tasks easier.
Add more tasks for sorting.
Merge pull request #6 from Pliner/master

Доделки по структурам данных и сервисам
Merge branch 'master' of github.com:kontur-edu/uLearn
small fixes in OOP slides
small fixes
remove trash
Fix small bug on slide BP
fix bug
Recursion unit
add manupulator task
Fix publish settings
small fixes in sorting
update tablesorter from 2.0.5b to 2.18.3