Since the whole thing with Android going full screen with margins, the
combobox popup idea started showing a big flaw; Qt no longer clips the
window on top to the content area and thus your top and bottom item may
become impossible to select.
This replaces the combobox with a new component; a thumbler. Based on
the extremely basic one from QQComponents we introduce our own and use
that to select the year and month in the import screen.
tomFlowee
b48bfea02c