updated settings for split
updated LogicalOperatorCollection topic and url
updated LogicalOperator model and collection, ports
renamed Operator* => PhysicalOperator*
removed 0.6 from travis.yml file
Merge branch 'dt-dev' of github.com:DataTorrent/malhar-ui-console into dt-dev
Merge branch 'dt-dev' into logical_ops_topic.MLHR-1954
fixed dag metrics display with new topic
Merge branch 'logical_ops_topic.MLHR-1954' into dt-dev
MLHR-734 #resolve