Schedule properties cron-like format

CRON expressions that should be assigned to schedule properties have the following syntax:

┌──────────── second (0 - 59)
│ ┌───────────── minute (0 - 59)
| │ ┌───────────── hour (0 - 23)
| │ │ ┌───────────── day of month (1 - 31)
| │ │ │ ┌───────────── month (1 - 12)
| │ │ │ │ ┌───────────── day of week (1 - 7: Sunday to Saturday)
| │ │ │ │ │
│ │ │ │ │ │
│ │ │ │ │ │
* * * * * *

Support of the CRON expressions is limited by quartz. In particular, specifying both a day-of-week and a day-of-month values is prohibited (you'll need to use the '*' character in one of these fields).

The only note here is that '*' character is used instead of '?' character in compare with quartz.

Several CRON expressions can be assigned for each property, they should be delimited by semicolon.