#286 Add collaboration feature with libinfinity

[kaouete]

Hello,

To permit collaborative work on latex document, it would be really cool to have support for libinfinity (http://gobby.0x539.de/trac).
It is a library/server that works on linux/windows/mac.

There is several implementation on windows (gobby), linux (gobby, kobby) and mac (gobby).

Thank for your work !