Indicate network in the Node window title - similar to the main window #544
Description
While testing/reviewing PR #414
I was running Bitcoin-Qt.app concurrently with different active networks.
I noticed that it may be useful to indicate the network in the Node window title - similar to the main window title.
Additionally you can see that the task bar ornaments are crowded when the main window is minimized.
When the proxy setting is enabled - the "P" adds to the crowding.
NOTE: it may be useful to modify the global styling template based on network selected.
Adding an appropriate background color tint to the gui may be a good fix as well as the title modification.
