* support executable property
* process model with no primary file is not executable
* filter by executable and primary file and avoid snagging g.user from service
* kill Start buttons on process group list as well
* use more similar code to check is executable and write integration test
* add a test and improve a variable name
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Co-authored-by: burnettk <burnettk@users.noreply.github.com>
Kevin Burnett