Process Modeler Fixes - mike's backlog

A comprehensive backlog of Process Modeler UX fixes including: title bar wasting space that could show full PM/instance name, single-line expression limits still existing, searching for objects in global search not showing smart services first, right-click menu needs revision, variables listed in expression editor needing more detail, smart services interface inputs not shown in Process Model documentation, CTRL+Y hotkey should save the edited instance, flow nodes defaulting to Terminate end nodes, values configured as interface inputs not shown as expressions, node configurations in Smart Services list needing separate shortcuts, complicated task assignment by expression issue, and font/style editor affecting only most recent selection.