add percentage utilisation graph to ports (someone asked for this, was pretty easy to do, will find some colours in a sec)


git-svn-id: http://observium.org/svn/observer/trunk@4453 61d68cd4-352d-0410-923a-c4978735b2b8
fix hddtemp, fix port percent colours


git-svn-id: http://observium.org/svn/observer/trunk@4454 61d68cd4-352d-0410-923a-c4978735b2b8