Fix misspelled variable name
Increase the default max lenghts for OS and CPU

I have encountered some situations where the previous max lengths were
not enough.
Show number of assigned agents in queue view
Merge pull request #312 from guidow/agent_mac_address_fix

Fix misspelled variable name
Merge pull request #313 from guidow/fix_default_cpu_osname_maxlengths

Increase the default max lenghts for OS and CPU
Merge pull request #315 from guidow/show_actual_agents_in_queue_view

Show number of assigned agents in queue view