This is to avoid Qt auto-generating code like this:
`buttonAdd->setText(QStringLiteral(""));`
Which makes no sense and triggers clazy warning (Wclazy-empty-qstringliteral).
"Active torrents" is a somewhat unintuitive concept as a basis for
preventing sleep, as torrents can become active or inactive on the
network at any time. This brings some predictability to the inhibit
sleep option, and will inhibit sleep as long as there are unpaused
downloads or uploads, regardless of network activity.
Closes#1696, #4592, #4655, #7019, #7159, #7452
