Bug Fixe The Same Font for Titles in Arabic lang

I added the line-height for all the type of title h1,h2,h3,h4,h5,h6 to fixe the same font for all:

http://i.imgur.com/z70Nrv8.png
http://i.imgur.com/4sQm8M5.png
http://i.imgur.com/LPjxIAa.png
It looks like you've got a submodule update in here. Can you rebase and remove this? Let us know if you need a hand with this. Thanks!