actions: make JumpToPlayingSong work also if player is stopped

src/actions.cpp

@@ -1140,7 +1140,7 @@ void TogglePlayingSongCentering::run()
 		Config.autocenter_mode ? "on" : "off"
 	);
 	if (Config.autocenter_mode
-	&& Status::State::player() != MPD::psStop
+	&& Status::State::player() != MPD::psUnknown
 	&& !myPlaylist->main().isFiltered())
 		myPlaylist->main().highlight(Status::State::currentSongPosition());
 }
@@ -1162,7 +1162,7 @@ bool JumpToPlayingSong::canBeRun() const
 	return ((myScreen == myPlaylist && !myPlaylist->isFiltered())
 	    ||  myScreen == myBrowser
 	    ||  myScreen == myLibrary)
-	  &&   Status::State::player() != MPD::psStop;
+	  &&   Status::State::player() != MPD::psUnknown;
 }
 
 void JumpToPlayingSong::run()

src/help.cpp

@@ -290,7 +290,7 @@ void write_bindings(NC::Scrollpad &w)
 	key(w, Type::SortPlaylist, "Sort playlist");
 	key(w, Type::ReversePlaylist, "Reverse playlist");
 	key(w, Type::FilterPlaylistOnPriorities, "Filter playlist on priorities");
-	key(w, Type::JumpToPlayingSong, "Jump to playing song");
+	key(w, Type::JumpToPlayingSong, "Jump to current song");
 	key(w, Type::TogglePlayingSongCentering, "Toggle playing song centering");
 
 	key_section(w, "Browser");