Update Extended Diagnosis Information

Check, if Diagnosis page can be accessed and is filled with valid information.

OMB IO diagnosis task state name item is not visualized correctly. The last item in the list is named "Element_19". Probably it is not defined in the current OMB_DIAG.xml file.

Steps to reproduce:

1. Start SYCON.net on the test PC.
2. Place OMB TCP netSLAVE DTM on the root line.
3. Select CIFX Device Driver in OMB TCP netSLAVE DTM and open Device Assignment page.
4. Assign proper hardware device and then download OpenModbus TCP firmware V2.6.0.0
5. Open device diagnosis in OMB TCP netSLAVE DTM.
6. Go to Extended Diagnosis --> OMB and select last item named OMB IO.