extracted some methods to a Backup class
extracted some more methods
added a basic logout route
added a user service
show last backup info at logout + create stub
fixed some bad syntax
extrated Backup::create, save and sign
handle i/o error when saving file
actually logout
properly define newBackup for template (non-admin user)
changed the logout message
use different timeout depending on message
create backup at logoff and propose download
fixed redirect to login in access control
implemented click on yes to download backup
removed unwanted log
added possibility to declare public actions on protected controllers
allow public backup download at logout
fix: removed unwanted change
added a route to clear the atLogout flag