responsive menu for user not logged in and icon with logout
Merge branch 'master' into devel
fixes in base template
merged with @sapiezynski fix
added 40px logo
logout from services
added error descriptions
added study offline status, hopefully won't be used too often
nicer logout screen
case of user already logged in
better validation of fields in registration
support for no-js and old browser case, shamelessly stol... borrowed from @sapiezynski