* syslog_ng_stats: mark total counter stats as DERIVE / min 0
the data produced by the underlying `syslog-ng-ctl stats` gives the stats values in absolute numbers since the start of the syslog-ng daemon. In order to visualize in a more user friendly way those values are now marked in the config as type DERIVE.
* syslog_ng_stats: graph_vlabel set as messages/graph_period
smstools -> other (smstools)
sourceds -> games (sourceds)
squeezebox -> radio (squeezebox)
syslog -> system (syslog)
ultramonkey-l7 -> loadbalancer (ultramonkey-l7)
moved directory jmx up to level 1 in hierarchy
