Improving text-shadows : fix bad blur effects on some buttons, lists, ui-li-dividers when a black text has a black text-shadow ; Removed any remaining blur on text shadows for better performance  (@see https://github.com/jquery/jquery-mobile/commit/790317193dff147d504e644e5fb0cfe8605796fa)
Merge pull request #190 from auxepaul/UP-3877

UP-3877: Improving text-shadows