Brief summary of issue / Description of requested feature:

We ought to give pF a much better name everywhere in the project.

Steps to reproduce the issue / Reasons for adding feature:

1. See for example src/dlgRoomSymbol.cpp
2. There was a function with dlgRoomSymbol::dlgRoomSymbol(Host* pHost, QWidget* pF) : QDialog(pF), mpHost(pHost)

The p is a prefix for pointers and may stay, but what is an F?

Error output / Expected result of feature

The QWidget pointer needs a more readable name.

Extra information, such as the Mudlet version, operating system and ideas for how to solve / implement:

Originally noted / requested by Vadi here:
#4573 (comment)

The original line from the exampe above now reads:
dlgRoomSymbol::dlgRoomSymbol(Host* pHost, QWidget* pParentWidget)
so pF was turned into pParentWidget there, but not everywhere, yet: