Fix inability to add kapacitor from source page
Fix inability to add kapacitor from source page

The kapacitors array on source was not yet defined.  So, I added
a default empty array to the kapacitors key off of source.  Also,
cleaned up some logic regarding the duplication of kapacitor names.

mark-rushakoff/influxdb,nooproblem/influxdb,influxdb/influxdb,influxdb/influxdb,influxdata/influxdb,influxdb/influxdb,mark-rushakoff/influxdb,li-ang/influxdb,mark-rushakoff/influxdb,nooproblem/influxdb,influxdata/influxdb,nooproblem/influxdb,influxdb/influxdb,mark-rushakoff/influxdb,li-ang/influxdb,nooproblem/influxdb,nooproblem/influxdb,mark-rushakoff/influxdb,influxdb/influxdb,influxdb/influxdb,mark-rushakoff/influxdb