Remove unnecessary black ground colour

Signed-off-by: Shaka Huang <shaka@cs03.org>
Move string to resource file

Signed-off-by: Shaka Huang <shaka@cs03.org>
Set translatable to false for string array: category

Signed-off-by: Shaka Huang <shaka@cs03.org>
Change title of share chooser

Signed-off-by: Shaka Huang <shaka@cs03.org>