message: Add a quick verify/modify of the directory used for the Lumina wallpapers.
  Try to adjust the old path to the new one automatically.
diff: @@ -539,7 +539,16 @@ void LDesktop::UpdateBackground(){
  //qDebug() << " - List:" << bgL << CBG;
  //Remove any invalid files
  for(int i=0; i<bgL.length(); i++){
  - if( (!QFile::exists(bgL[i]) && bgL[i]!="default" && !bgL[i].startsWith("rgb(") ) || bgL[i].isEmpty()){ bgL.removeAt(i); i--; }
  + if(bgL[i]=="default" || bgL[i].startsWith("rgb(") ){ continue; } //built-in definitions - treat them as valid
  + if(bgL[i].isEmpty()){ bgL.removeAt(i); i--; }
  + if( !QFile::exists(bgL[i]) ){
  + //Quick Detect/replace for new path for Lumina wallpapers (change in 1.3.4)
  + if(bgL[i].contains("/wallpapers/Lumina-DE/")){
  + bgL[i] = bgL[i].replace("/wallpapers/Lumina-DE/", "/wallpapers/lumina-desktop/"); i--; //modify the path and re-check it
  + }else{
  + bgL.removeAt(i); i--;
  + }
  + }
  }
  if(bgL.isEmpty()){ bgL << "default"; } //always fall back on the default
  //Determine if the background needs to be changed
  