message: Cleanup the stylesheet usage on apps a bit more.
  Still apply any application styles if the app has it's own global stylesheet, but put the additional styles earlier in the priority so the app stylesheet has priority over any conflicting rules.
diff: @@ -133,10 +133,10 @@ void lthemeenginePlatformTheme::applySettings(){
  else{ qApp->setPalette(qApp->style()->standardPalette()); }
  }
  //do not override application style if one is already set by the app itself
  - if(qApp->styleSheet().isEmpty() || qApp->styleSheet()==m_oldStyleSheet){
  - qApp->setStyleSheet(m_userStyleSheet);
  + QString orig = qApp->styleSheet();
  + if(orig.startsWith(m_oldStyleSheet)){ orig = orig.remove(m_oldStyleSheet); }
  + qApp->setStyleSheet(m_userStyleSheet+orig); //make sure the app style has higher priority than ours
  m_oldStyleSheet = m_userStyleSheet;
  - }
  }
  #endif
  