updating list of memcache nodes in python app servers at most once per minute
having the appcontroller write an updated list of nodes running memcached periodically
excluding nameservers from /etc/resolv.conf
only removing nameservers from /etc/resolv.conf if the user requests it in the tools
merged with testing
css for chart tooltips
js for hover over tooltip
flot.js tooltip plugin
added jquery.flot.tooltip.js source to main layout
Merge remote-tracking branch 'org/testing' into no-nameservers-in-etc-resolv
fixed broken unit test
Merge pull request #620 from shatterednirvana/no-nameservers-in-etc-resolv

No nameservers in /etc/resolv.conf
Merge pull request #629 from AppScale/chart-tooltips

Chart tooltips
removing whitespace on user's email when they login to the dashboard
not using public and private DNS in euca, since they often don't resolve correctly for us
Merge pull request #631 from shatterednirvana/use-ips-in-euca

not using public and private DNS in euca, since they often don't resolve correctly
Merge pull request #630 from shatterednirvana/remove-whitespace-on-login

removing whitespace on user's email when they login to the dashboard