Fixes large number of thumbnails leads to low memory

Due to huge number of pictures taken either by camera or
sceenshots, thumbnails of those pictures fills the internal
storage quickly in low internal memory device

Change-Id: If77e24c20feb89cd1755d308d6f3bc0348c528f9
CRs-Fixed: 650808
Support SD card absent indicator

Change-Id: I7c08b86b7ae5e05ac9fce305928ea99099c6e938
Show wifi status when wifi enabled
Credits to CM