fixed to detect if a device name defined in 'disk' doesn't exist in the system
fixed in 'lmsens' to not use the returned value if 'nvidia-smi' is not installed
Fixed in 'nginx' to avoid use of uninitialized values and show and error
message when Monitorix is unable to connect to Nginx server
Fixed in 'apache' to show an error message when Monitorix is unable to connect to Apache server
Fixed in 'lighttpd' to show an error message when Monitorix is unable to connect to Lighttpd server
Fixed in 'icecast' to show an error message when Monitorix is unable to connect to the Icecast server
Fixed in 'traffact' to show an error message when Monitorix is unable to connect to the HTTP server
updated