* Unify OS information.
Now OS information is only stored into the Host. The lua uses numeric IDs to handle OS.
* Fix network discovery OS
* Show OS detail into the host details page
* Integrate modified nvd3 library with zoom and multicharts working support
* Fix count in RRD driver
* Initial chart ajax migration
* Update nvd3 with zoom stack support
* Fix RRD listSeries with directories
* Work in progress graphs
* Compatibility fix
* Initial support for schema based api
* Add missing script
* Fix listSeries for existance check
* Implement topk timseries api
* Implement topk queries and fix labels and formats
* Migrate interface top sender and receivers
* Migrate charts to new API
* Move timeseries list for menu inside respective scripts
* Add support for extended labels
* Fix missing fields while chaning graph resolution
Also Rename drawRRD in drawGraphs
* Fix historical tabs
* Add missing time fence in influx topk
* Add graphs support for custom statistics visualization
* Initial support for graphs statistics footer
* Implement statistics in single graphs for RRD driver
* Move sampling function into the driver and fix graph statistics
* Fix max/min value offset
* Implement influxdb sampling use built-in FILL
* Implement stats and total serie in influxdb driver
* Update nvd3 with multiChart fixes
* Update nvd3 with new multiChart fixes
* RRD driver fixes
* Move metrics type from single metric to schema
* Handle ajax errors and empty data in charts
* Fix flow device interfaces graphs
* Use timeserie label as timeseries dropdown text
* Implement topk aggregation into one data serie
* ts_utils module now provides all the schemas
* Migrate ntop.exist(rrd) to ts_utils.exist
* Fix timeseries dropdown label
* L4 protos fixes for charts
* Migrate getProtoVolume to new API
* Integrate nvd3 fix for tooltip position
* Initial community graphs migration to timseries API
* Fix community timeseries dropdown and historical tabs
* Hide total serie by default
* Remove l4 protos from topk charts
