Changed jsoninfo listening address back to 0.0.0.0 to fix olsr-viz.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Added a call to ldconfig because libgit2 wasn't getting mapped at boot
time, and stationd was carping about it.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Added notices that users may have to restart their browsers to the
captive portal's index.html.* pages.  The French one was done with
Google Translate, which probably means that a sentient lifeform will
have to translate it for real.

Signed-off-by: The Doctor <drwho@virtadpt.net>