Fix for https://github.com/ViennaRSS/vienna-rss/issues/994
Fix for https://github.com/ViennaRSS/vienna-rss/issues/994

Article loading is now async, so we can't check for selected article when loading a folder.

ViennaRSS/vienna-rss,Eitot/vienna-rss,josh64x2/vienna-rss,ViennaRSS/vienna-rss,Eitot/vienna-rss,Eitot/vienna-rss,josh64x2/vienna-rss,Eitot/vienna-rss,barijaona/vienna-rss,lapcat/vienna-rss,ViennaRSS/vienna-rss,ViennaRSS/vienna-rss,josh64x2/vienna-rss,josh64x2/vienna-rss,josh64x2/vienna-rss,lapcat/vienna-rss,barijaona/vienna-rss,lapcat/vienna-rss,ViennaRSS/vienna-rss,lapcat/vienna-rss,barijaona/vienna-rss,barijaona/vienna-rss,barijaona/vienna-rss