Free Connections where noted

[pentix]

Mostly "todos"

Not sure if I am going to fix this, as we only lose a few hundred bytes per Connection and
it's a real pain to ensure the absence of double-free errors. The typical user might not care, even after years...

See for example:

qjournalctl/src/connectiondialog.cpp

Line 127 in 89eb501

// todo: free?