Better handle processes which exited with error

[dkarlovi]

Q	A
Bug report?	no
Feature request?	yes
BC Break report?	no
RFC?	yes
Branch?	master

Currently, the processes which fail are not marked as such in the UI, they are just kept around and the impression (from users) is the process "hanged".

A better approach would be to keep track of the process execution and exit codes, marking the processes which exited unexpectedly in some way (maybe red-ish background or something?), signaling to the user this went badly.

[dpfaffenbauer]

yep, we currently don't monitor the process at all... so this would also allow us to monitor process which do not give directly feedback to the Process instance as well

[dkarlovi]

The first step would be to just change the status to Failed, even that would give more information to the person looking at it.