Better stats

[NicolasFR34]

Now, when your server is online the only stats you have are cpu and ram usage, but the thing is that the only view you have is of the last 60 seconds, and i really think it would be nicer to have:

• An extendable view (= you can see all the cpu usage, useful for a server online 20/7) /the possiblity to only see the 10 last mins, or the last 30 mins etc
• The possiblity to move the area that you see with the mouse (currently you can't move the zone you see)
• An "average" line that show the average usage (for example an orange line)