added discovery button
Discovery without glpiId done
Revert "Discovery without glpiId done"

This reverts commit 702af3544bcc14e651d6d6e93035b2e521161e28.
Discovery without glpiId
Added glpi link on ip addresses
cleaner discovery script code
add manual glpi subnet verification
add manual glpi subnet verification
added popup with discovered ip addresses' information upon discovery
removed forgotten and useless commented code
Up-to-date, ping scan whole subnet, ping update state
Added offline, free hosts for each subnets on the section overview
discovery now updates the host name of every machine so they match the glpi ones
Redefined how the subnets' freeHosts are calculated
Added color on the subnet overview depending on the % of free ip addresses in each subnets
minor color adjustment
Replaced 'Offline' column in subnet overview for 'Reserved'. Adjusted overview display and colors.
Fixed display bug in search table
Free ip addresses counts, on subnet overview, are now clickable and link to the subnet
Removed glpiId column from the search result page