* Add typeWatcher for search form
* Replace `strlen` to `mb_strlen`, because we limit count of chars rather than count of bytes

* Fix search for students by 1-2 letters and with group filter

+ Add animation for modules swaps
+ Add always / error callbacks to $.post requests
+ Remove usages of deprecated variables & functions
+ Format code, apply naming conventions

This reverts commit 533e9c7b.

+ Fix types

* Add role for the person who teacher and curator in the same time and remove odd user_roles.sql from root of project
* Fix and move sql file with curators_groups table
* Remove  from sidePanel disciplines and sheets
* Fix bug with showing to any user link to office

+ Font awesome icons
+ Split js code into functions
+ Improved appearance