Merge pull request #13 from ZlayaZhaba/master

Added BILLING_BUCKET to env
Move security group name methods to amazon module
Accept secgroup ports as api request params
Added SSH_PORT to predefined secgroup
Move rqworker run method to special file and added handler exception
Fix worker exception handler for non workerexceptions
Fix exception subclass in worker exception handler
Add log messages; change default logging level to info
Set method status to error if job failed
Fix logger in amazon class
Return empty string fail meessage
Fix missing cidrUI on amazon init
Fix encryption on downloadkey
Move amazon key init to connect method
Fix amazon init if sgPorts param is missing
Fix uploadKey encrypt method
Remove unused billing methods; update docs
Added brackets for env parameters