- Ignore autotests sources
- Teach cppcheck about a okular specific define
- Keep the default options from the KDE setup
This at least for me brings the cppcheck entries from "unusable" to "something that probably should be looked into"
For some reason QIcon::fromTheme(QStringLiteral("okular")) doesn't
return the proper icon on WelcomeScreen construction, i'm guessing
that's a bit too early, though haven't investigated why