added status icons for start, error, and stop
updated removeClass for setStatus. added status for when process is
killed.
set views to have headerView and scriptView css classes respectively.
updated less style to only adjust styles inside of those classes and
also using all colors through atom style guide / ui-variables
changed icon-error for icon-alert
Merge pull request #48 from rgbkrk/status

Status icons for start, error, and stop