Open link in background tab from within extended hint mode

Hello everybody,

Attached you find a patch to add support for opening a link in a  
background tab from within extended hint mode. It as well updates the  
char-hints.js script and documentation.

Yours,
Daniel

Hello everybody,

Attached you find a patch to add support for opening a link in a  
background tab from within extended hint mode. It as well updates the  
char-hints.js script and documentation.

Yours,
Daniel