Create Messages class
Mark all strings to be translated
Update QtCreator to 3.0.0
Fix bug: adding users to box multiple times without clearing it
Remove unnecessary 'isActive' variable in Timer class
Fix bug: application requests Admin password after clicking exit-cross
Fix bug: when application was minimized it could be closed just closing
password dialog
Display time remaining when limit is inactive but settings file exist
Set properly resume / pause button icon
Refactoring FileManager class: in fact 'stats' should be named 'log'
Change possible values of limit-active: true -> 1, false -> 0.
Now values of each option have the same length
Use a bit stronger password hash
It will be replaced by even stronger hash in the near future
Implement logging all interesting information
Fix bug with twisting time.
Timer doesn't have to be restarted each time.
Do use of the fact that signal/slots can pass arguments:
make saveTimePeriod independent from User class.