Display the selected work set next to OpenCities Map in the file name description

It would be useful to see at a glance in which work set we are working without having to go back to the recent WorkSets section.

We frequently work between project files (with a database connection) and temporary files (without database connection). Previously we either worked in Bentley Map V8i or MicroStation. With the standalone version we need to double check that the correct WorkSet is selected before proceeding with work.