[isf-wifidog] errors in fresh install of cvs head

[Pascal Leclerc]

> Excellent, I will definitely contribute to the documentation, there is
> so much to do.
>
A great contribution (and really appreciated) will be for the content
manager documentation (also only Benoit and you really know how it work).
Or a crash course the next time we meet : I don't know how to build a
custom page for my hotspot and it drive me crazy

Aussi la correction de mes phrases en anglais ;-)