adding controller for data and data extraction from servers
fixed drawing area
adding hosts list from caretaker agents
using data from a centralized source
Merge pull request #1 from dimerman/remote_extraction

adding controller for data and data extraction from servers
merge from master
tweaking coefficients
Merge pull request #2 from dimerman/host_from_caretaker

adding hosts list from caretaker agents
Merge branch 'master' into ui
tweaking coefficients