rem: gOnCancel(); 
add:     if (gIsMainApplicationContext) { updateToolbarLocation(gPreviousLocation); }  gOnCancel(); 
context: onCancel = function(){  updateToolbarLocation(gPreviousLocation);  gOnCancel();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/49d99658257e01d5bb14d94382a0b2604eb4fa45/customize-toolbar.js/buggy/calendar/lightning/content/customize-toolbar.js