The swipe-to-refresh from the latest tab is now also implemented
for the categories and updates tab. It was a bit weird before how
you could swipe to refresh on the first tab, which would show
"Updating repos" at the top. It would then also show the same
message on the categories tab, but you couldn't swipe-to-refresh
that tab. Additionally, several people have requested this on the
updates tab, the tab where it probably makes the most sense.
Fix#1079.
b69a26463c