mainmenu: Use style sheet to override icon
mainmenu: Use style sheet to override icon

pmattern/lxqt-panel,stefonarch/lxqt-panel,stefonarch/lxqt-panel,pmattern/lxqt-panel,lxde/lxqt-panel,stefonarch/lxqt-panel,cferr/lxqt-panel,lxde/lxqt-panel,cferr/lxqt-panel