[TIMOB-10710] Android: Add persistent property support to Titanium.UI.AlertDialog and Titanium.UI.OptionDialog

   // this sets the background color of the master UIView (when there are no windows/tab groups on it)
   Titanium.UI.setBackgroundColor('#000');
    
   var tabGroup = Titanium.UI.createTabGroup();
    
   var win1 = Titanium.UI.createWindow({  
       title:'Tab 1',
       backgroundColor:'#fff'
   });
   var tab1 = Titanium.UI.createTab({  
       icon:'KS_nav_views.png',
       title:'Tab 1',
       window:win1
   });
   
   tabGroup.addTab(tab1);  
    
   tabGroup.open();
   
    
   var alertDialog = Titanium.UI.createAlertDialog({
       title : "Title",
       message : "Message",
       buttonNames : ["Yes", "No"],
       persistent: false
   });
   alertDialog.show();
   

   Ti.UI.setBackgroundColor('white');
   var win = Ti.UI.createWindow({
     title: 'Click window to test',
     backgroundColor: 'white',
     exitOnClose: true,
     fullscreen: false
   });
   
   var opts = {
     cancel: 2,
     options: ['Confirm', 'Help', 'Cancel'],
     selectedIndex: 2,
     destructive: 0,
     persistent: false,
     title: 'Delete File?'
   };
   
   win.addEventListener('click', function(e){
     var dialog = Ti.UI.createOptionDialog(opts).show();
   });
   win.open();