Use getCurrentChannel #36

There is a problem with the method getUsers. It returns an empty set :
it comes from the lib may be.
Chips' display changed, deletable #38

WARNING : When you press cross, don't be shy, ppuusshh !!!
I don't know why but the spanClick is very sensitive, but works !!!

I've chosen to use a list (easier to manipulate) composed of string
formatted like : #Channel

When the user press space, "#" is added to the channel's name and
the chips appears.

Backend isn't still done...