[BZ 1070243] - (JON3-31) Add "Recent Events" portlet into JON
Dashboard

To make the filtering (based on resource name) working, I had to add also
 the new method to the EventCriteria class.

To sum it up, it is possible to filter by:
 * time ("from, to" or "last n mins/hours/days")
 * resource name - only for global Recent Alerts portlet; it accepts also a substring of a name
 * event source path - it accepts also a substring of a path
 * severity (almost the same as alert priority filtering)
 * result counts (5 is default)

Having that said, the performance shouldn't be an issue, because the
filters may be set to fetch only a few records.