message: Fix the icons for lumina-pdf
diff: @@ -162,9 +162,9 @@ MainUI::MainUI() : QMainWindow(), ui(new Ui::MainUI()){
  ui->actionFit_Width->setIcon(LXDG::findIcon("transform-scale",""));
  ui->actionFit_Page->setIcon(LXDG::findIcon("zoom-fit-best",""));
  ui->actionOpen_PDF->setIcon(LXDG::findIcon("document-open",""));
  - ui->actionSingle_Page->setIcon(LXDG::findIcon("format-view-agenda",""));
  - ui->actionDual_Pages->setIcon(LXDG::findIcon("format-view-grid-small",""));
  - ui->actionAll_Pages->setIcon(LXDG::findIcon("format-view-grid-large",""));
  + ui->actionSingle_Page->setIcon(LXDG::findIcon("view-split-top-bottom", "format-view-agenda"));
  + ui->actionDual_Pages->setIcon(LXDG::findIcon("view-split-left-right", "format-view-grid-small"));
  + ui->actionAll_Pages->setIcon(LXDG::findIcon("view-grid", "format-view-grid-large"));
  ui->actionScroll_Mode->setIcon(LXDG::findIcon("cursor-pointer",""));
  ui->actionSelect_Mode->setIcon(LXDG::findIcon("cursor-text",""));
  ui->actionZoom_In->setIcon(LXDG::findIcon("zoom-in",""));
  @@ -177,13 +177,13 @@ MainUI::MainUI() : QMainWindow(), ui(new Ui::MainUI()){
  ui->actionPrevious_Page->setIcon(LXDG::findIcon("go-previous",""));
  ui->actionNext_Page->setIcon(LXDG::findIcon("go-next",""));
  ui->actionLast_Page->setIcon(LXDG::findIcon("go-last",""));
  - ui->actionStart_Here->setIcon(LXDG::findIcon("media-playback-start-circled",""));
  - ui->actionStart_Begin->setIcon(LXDG::findIcon("presentation-play",""));
  - ui->actionStop_Presentation->setIcon(LXDG::findIcon("media-playback-stop-circled",""));
  + ui->actionStart_Here->setIcon(LXDG::findIcon("video-television","media-playback-start-circled"));
  + ui->actionStart_Begin->setIcon(LXDG::findIcon("video-display","presentation-play"));
  + ui->actionStop_Presentation->setIcon(LXDG::findIcon("media-playback-stop", "media-playback-stop-circled"));
  ui->actionBookmarks->setIcon(LXDG::findIcon("bookmark-new",""));
  ui->actionFind->setIcon(LXDG::findIcon("edit-find",""));
  - ui->actionFind_Next->setIcon(LXDG::findIcon("edit-find-next",""));
  - ui->actionFind_Previous->setIcon(LXDG::findIcon("edit-find-prev",""));
  + ui->actionFind_Next->setIcon(LXDG::findIcon("go-down-search", "edit-find-next"));
  + ui->actionFind_Previous->setIcon(LXDG::findIcon("go-up-search", "edit-find-prev"));
  ui->actionProperties->setIcon(LXDG::findIcon("dialog-information",""));
  ui->actionSettings->setIcon(LXDG::findIcon("document-properties",""));
  ui->findNextB->setIcon(LXDG::findIcon("go-down-search"));
  