> Items ids were already being typecasted to int when being bound on the UI
> Using a consistent type allow better use of platform data-structures
> Adding IntArray and IntSet as a replacement for various Collection classes
Change-Id: Id3c650ed2420c2bfca3bd7671d2b705b56112371
When launcher loads, it fetches the list of apps twice, once for
loading all-apps and again for updating icons. Instead reusing
the previously fetched apps list.
Also moving the icon loading in a separate package for further
generalization
Change-Id: Ibd2dae56e6027a31b633da030bc6b43a90b27e1b
