boost first time launch

animation is not needed at first time launching, it is only useful when
searching.
make the keyboard use English only.
support showing keyboard for Volumnkey
try holo light theme
Revert "try holo light theme"

This reverts commit 92daed5e871985d6f952a97303a27cc057d83e1a.
touch blank area can pop up keyboard
exclude from recents = true
slide down to show keyboard
use place holder entry view
support search incomplete spelling
we dont need this first charactor handling anymore because we support incomplete spelling search.