Possible solution to nodes dying prematurely while run_instances is in progress. This fix will detect any terminated nodes and throw an error which in turns will signal the AppController and Tools.
properly calling AppManager from AppController, and fixed bug in AppManager
improved logging throughout autoscaler, and reset scaling info when we add or remove nodes, since that was confusing haproxy
Merge pull request #574 from shatterednirvana/fixed-scaling

Fixed intra-machine scaling
memcache global statistics added to dashboard status page
Merge pull request #575 from AppScale/stats

memcache global statistics added to dashboard status page
added initial code for appservers to request more machines
added code/test to get scaling requests from ZK
added initial implementation and tests to scale appservers across machines
properly setting roles on new nodes
removed seperate container for memcache stats chart, re-aligned IP address within status table
Build script now uses easy_install to install Tornado, added Flower (Celery stats) to the build script
added support for linking to Flower from with the dashboard
added Flower URL/Port supprt
added shared nav button for access to flower status page
added iptable entry for Flower status page
not scaling beyond the maximum number of vms the user has requested
removed trailing whitespace
not failing AppController requests if we get a SOAP EmptyResponseError
scaling up and down based on requests per second, instead of requests since last check in