On FeedHQ server, fetch articles 48h prior to last refresh
On FeedHQ server, fetch articles 48h prior to last refresh

Followup issue #676
For other servers than FeedHQ, just limit the search to date/time of last update
tothgy/vienna-rss,Eitot/vienna-rss,dak180/vienna,dak180/vienna,dak180/vienna,lapcat/vienna-rss,Eitot/vienna-rss,lapcat/vienna-rss,lapcat/vienna-rss,josh64x2/vienna-rss,Eitot/vienna-rss,ViennaRSS/vienna-rss,ViennaRSS/vienna-rss,josh64x2/vienna-rss,barijaona/vienna-rss,ViennaRSS/vienna-rss,tothgy/vienna-rss,josh64x2/vienna-rss,josh64x2/vienna-rss,tothgy/vienna-rss,barijaona/vienna-rss,barijaona/vienna-rss,dak180/vienna,barijaona/vienna-rss,barijaona/vienna-rss,ViennaRSS/vienna-rss,ViennaRSS/vienna-rss,josh64x2/vienna-rss,Eitot/vienna-rss,tothgy/vienna-rss,lapcat/vienna-rss