Allow to display operation labels instead of IDs in Automation Chains

"Before", the list of available operations in Automation Chains was displayed using their label. Now, since some months (I can't remember the exact date, say beginning of 2016 maybe) they display the IDs. This makes the reading cumbersome and less intuitive, even if a tooltip displays the label. I think it is a loss of feature (hence the "Bug" type instead of "Improvement".

We should be able to display both, using a checkbox, a user preference, so Studio switches from IDs to labels and viceversa