[IPOL discuss] file exploited in template html page

[Enric Meinhardt-Llopis]

> 1) Add static directories to the demos.

An appropriate place for storing static images is the demo "input" directory.

The "input" directory exists and it is already readable by the web
server at an absolute and known location (for example, it stores the
thumbnails of the images shown in the input page).  See:

http://demo.ipol.im/demo/90/input/.__192x192__IMG_0181.png