Added operator for division of two sf::Time objects
Merge pull request #453 from Bromeon/master

Added operator for division of two sf::Time objects
Added String::fromUtf8/16/32 functions (#196)
Fixed stupid compile error in previous commit
Forgot to include <Utf.hpp> in <String.hpp>
Added String::fromUtf8/16/32 functions (#196)
Improved joystick detection performances on Linux (avoids endless calls to open when a joystick node cannot be open)
Merge branch 'master' of github.com:LaurentGomila/SFML