UnivNautes

Fix status_rrd_graph_img.php and also improve it:

- Remove escapeshellarg that broke command line
- Only remove dangerous chars to avoid command injection
- Replace all `hostname` calls by php_uname('n')
- Replace all `date` calls by strftime()
- Add $_gb to collect possibly garbage from exec return

Make sure single quotes are encoded and avoid javascript injection

Use CDATA for javascript

Fix indent and whitespaces

Simplify logic, add some protection to user input parameters

Fix whitespaces and indent

We need to allow subdirectories under /usr/local/pkg, here is the proper fix

Protect servicestatusfilter parameter with htmlspecialchars()

Protect rssfeed parameters with htmlspecialchars()

Avoid directory traversal on restorefullbackup