UTF-8 characters bug

[SBoudrias]

Special UTF-8 character ain't showing and some text fallback to weird serif style with the text-rendering: optimizelegibility; bootstrap enforce on all title.

I removed it for now, but I want to keep this issue open until we have a permanent solution as when we'll update bootstrap this issue will come back if not resolve up in the chain.

reduced test case here: http://jsbin.com/uqisib/6/edit

(related: twbs/bootstrap#5297)