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
Quit early when no jobtypes supported
Don't look only at running jobs in scheduler

Still prefer them to queued jobs, if they are at the same priority.

This will make the scheduler start newly queued jobs with a higher
priority immediately instead of waiting to run out of running jobs in
the current queue.
Assume not-running jobs have 0 agents assigned

This is an optimization; without it, the scheduler would run too long
now that it is also considering queued jobs by default.
Fix typo: remove "not"
Fix access to undefined local variable
Don't run jobs with unmet dependencies