Include descriptions of the owning Module in the descriptions of each process variable to make them more complete.

Updated to use the new ReadAnyGroup instead of the old readAny function. Some tests are still hanging or failing (mostly due to shutdown issues)

necessary changes for the latest DeviceAccess update (readAsync() return type no longer a reference, and other related changes)

- check if connections are actually working

fixed bug that using poll-type transfers in testable mode could sometimes lead to stalled tests or assert failures.