Implementor function edit standard job

It is possible for an implementor to edit the standard job description directly in the Component job details view.

This is to save time for those building new vessels, so that the implementor does not have to go through the process of finding the standard job description in the conventional way (by searching in Fleet à standard jobs for example).

WARNING: Editing standard job descriptions in this way can mean that the description is no longer suitable for other component jobs that it is connected to.  It should therefore only be used in situations where the user is sure that it will not cause any problems.