Missed cail() in seconds calculation code is now returned
Refactoring: removed PresetsPanel class, using NSWindowController instead
PRE-FINAL: all features are in place, only bugs left to fix

Known bugs:
 * Manual set and Preset panels only appears once (same as fixed in 66f125d)
 * Manual set: numberFormatter not working, have to place all formatting checks in IBAction for Set button.
 * 00:00:00 shown instead of 00:01:00

TODO:
 * Russian interface translation
 * Another sound for alarm
 * Better windows placement