Upravy puvodnich casti prace. Osetreny nejake zmeny. Nyni se pustit do psani hlavni casti.
Rozepsani povinnych vlastnosti trid, pouze text.
Rozepsani jednotlivych trid. Drobna uprava textu.
Work on app. Add conference, user components.
Text about System singleton.
Some text added.
Text in Ridici site added.
Updated images from MDA book.