fix is_running check to properly treat empty pidfile as not running
Bug 1082464 - Do not show links for ADD_MEMBER, UPDATE_MEMBERS, DELETE AND LEAVE for global teams
Check the return code before writing PID file in Python start_app()
Merge pull request #5155 from lnader/master

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Merge pull request #5156 from mfojtik/python_return_check

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Merge pull request #5144 from bparees/psql_migrate_restart

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