Update the Expert Information section of the User's Guide. Use the term
"Expert Information" to describe the dialog and "expert information
item" to describe each generated item. Update related text elsewhere.
Update the expert icon and other parts of the status bar docs.
Change-Id: I0c2cba0cbb3c74a1f6e3a37d4a2a592faccb350f
Reviewed-on: https://code.wireshark.org/review/35462
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Gerald Combs