detect touch event for more responsive UI
add align field in WidgetContainer
add Kindle-like dictionary window follow-up
update koreader-base
pull latest koreader-base with 16bpp blitbuffer fixes
Merge pull request #416 from chrox/master

add Kindle-like dictionary window follow-up
Merge pull request #417 from hwhw/master

pull latest koreader-base with 16bpp blitbuffer fixes