Moved zmBandwidth option from cookie to Configure:: option.  Might fix #175


![Uploading Screen Shot 2013-10-02 at 8.18.42 AM.png . . .]()
In addition I'm no longer passing this option around, instead calling it
where needed.  This _might_ fix #175 as the variable is being set very early on
in bootstrap.php to a default of 'low' if it is not already set.