Make jquery handling the timing rather than forcing a sleep on every bandwidth file.  This makes changing pages very slow as it must wait for the return of the particular php file it's on before the switch can happen, and it makes that much longer a delay for multiple nodes.  It should be much faster now that it waits one second and gets all the data, rather than waiting a second for each node it's trying to get bandwidth from.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@2668 71f96598-fa45-0410-b640-bcd6f8691b32