nextcloudclient run dependency qtquickcontrols for "Open main dialog"

[Sven Wolf]

Hi,

I use an minimal i3 desktop. And the NextCloud client main dialog 
doesn't open. So I don't see, what files where synced, etc.

After installing x11/qt5/qtquickcontrols everything works as expected.

In my opinion qtquickcontrols should also be added to the dependencies 
(qtquickcontrols2 is already an dependency).

Thanks,
Sven