updated js and views regarding tests, now they work with objectSecurity correctly

changes in security view:
- - - removed unused imports
- - - changed acl for better testing (teachers are not available at the
moment, and only admins can create content)

changes in css files, now tests play nicely along other admin panel
styles

other minor changes
Merge branch 'master' of https://github.com/Michaluch/rivneITA003