Monitoring/ops Improvements

 - If an environment variable is set, make a new monitoring package that
   continuously sends data to amazon cloudwatch on app internals such as
   queue length and throughput.
 - Use a ramdisk for better disk performance.
 - add more alarms
 - don't require a S3 user, generate it in the cloudformation template
   to ensure the user has access to s3 and cloudwatch
param adjustments
Don't scale twice within 5 minutes
ExcessRequests metric has dimension StackName, not AutoScalingGroup
Add alarms and monitors for low disk, memory, LB members
Remove debug logfile for metrics transmissions
Merge pull request #4 from PeopleAdmin/monitoring-rebase

Monitoring/ops Improvements