Add env variables for kiosk session timeout so they're always defined.
It times out immediately without them. Also allow override of env
variables on command line.
Reorganization of assets to segregate between default and kiosk.

* Kiosk assets all moved down to /kiosk
* Move non-kiosk JS and CSS to default/
* Segregate font files as well (even though makes duplicate files)
* Verified works with asset precompilation.
(*Get rid of Comf Mex Sofa.)
Merge pull request #134 from CG-CamSys/segregate-js-and-css

Segregate js and css