Description of problem:
Unlike the rest of the business central perspectives, that contain panels in the newer uberfire panels containers (see screenshot of what I mean) the jBPM dashboard perspective is still based on older style "tabbed" panels container.

Version-Release number of selected component (if applicable):
BPMS 6.0.0 ER4

How reproducible:
Always

Steps to Reproduce:
1. Go to Dashboard > Process and tasks dashboard

Actual results:
See screenshot

Expected results:
The visual style should be unified across all business-central perspectives, -> jBPM Dashboard perspective should use the same panels container as other perspectives.

Alternatively (probably even better to avoid unnecessary visual clutter) the jBPM Dashboard iframe should not be contained inside a closeable panels container, because there is only 1 panel all the time in this perspective, which we probably don't want to be closed. In such case the jBPM Dashboard perspective woul look along the lines of Home perspective, which contains no closeable panels at all.