catch exception of not found res.
res not found.
add log and set restoring = false after loading finished. Remove useless code.
fix scrolling mistake when back to launcher. when batch adding application, icon overlay issue.
fix: resume->pause->resume flow.
fix scrolling chaos.
change singleTask to singleInstance.
this code cause the 2nd load fail.
change 3x3 to 4x4, auto add page.
after check 1x1, launcher external mode.
check for all items. not really matter.
shallow copy.
replace hard code 12 .
change 16 to 9 screens, hasshortcut refacting.