More reliable Jagger process kill'ing

+simpler way of passing arguments
[JFG-400]: No error occures if Agent/kernel not running

"for" loop used instead of xargs to prevent kill from
printing an error if no running instances found.
[JFG-400]: Quoted $@ to allow multi-word parameters
Merge pull request #211 from k-popov/JFG-400

[JFG-400]: Some improvements in bash scripts used in Easy Deploy