MiniThumbFile: Fix image/bitmap retrieval

Change I66005dd69b0a5c8f4353bd7a8225d163a654fd2d changed the insertion
and creation indexing mechanism, but the retrieval method was still
using the old sparse one. Fixit

Fixes android.provider.cts.MediaStore_Images_MediaTest#testInsertImageWithBitmap,
android.provider.cts.MediaStore_Images_MediaTest#testInsertImageWithImagePath,
android.provider.cts.MediaStore_Images_ThumbnailsTest#testQueryExternalMiniThumbnails,
and android.provider.cts.MediaStore_Video_ThumbnailsTest#testGetThumbnail

Change-Id: I41feea79fa304635f3908055fb95a8c85718a97f
SystemUI: fix wrong statusbar background.

If we turned off screen while some panel was visible than
background of PhoneStatusBarView will not be updated because we receiving single
panelExpansionChanged call and after super.panelExpansionChanged mFadingPanel
will be null (onAllPanelsCollapsed cause this).

Allow updating background when mFadingPanel is null.

Change-Id: Ib123f27500790c1b7ec787b7e433372629daa08d