* Output image for graphs with no data
* add font
* Fix graph error, try to detect rrd missing
* centralize graph_error
use it for graph_text_and_exit()
* Add SVG, right now the text can get a little big...
* fix style
* Security fix: unauthorized access
Affects nginx users:
Moved php files outside of public html directory (Apache was protected by .htaccess)
Affects all users:
Some files did not check for authentication and could disclose some info.
Better checks before including files from user input
* git mv html/includes/ includes/html
git mv html/pages/ includes/html/