Merge pull request #340 from guihkx/patch-1

linux: set StartupWMClass in desktop file

Author: martinrotter

resources/desktop/com.github.rssguard.desktop

@@ -14,3 +14,4 @@ Comment[de]=Qt Feedreader mit großem Funktionsumfang bei geringem Ressourcenbed
 Icon=rssguard
 Terminal=false
 Categories=Qt;Network;News;
+StartupWMClass=rssguard