Lint jmxfetch and sort the list of JMX checks.
Add a kafka check, pulling metrics from JMX.
Use single quotes in kafka YAML to make it more readable
created MetricsBucketAggregator that aligns the Metrics into buckets the length of the interval before aggregating
update cassandra url
Enable process check on Windows

Fix #819
Merge branch 'master' of https://github.com/DataDog/dd-agent
Fix process check on windows
Add sudoers comment to postfix.yaml

since it's more likely to be read than the code.
Fix kafka metric types and names.
move calculations to flush(); make Gauge report bucket boundary as timestamp; add tests
Fix Cassandra link for travis
Merge branch 'master' of https://github.com/DataDog/dd-agent
Fix cassandra location
Skip Elastic search test for now

See #825
Merge branch 'master' of github.com:DataDog/dd-agent into statsd_buckets

Conflicts:
	.travis.yml
clean up pylint warnings
Collect metadata from Google Compute Engine instances
Fix Cassandra link for travis
Fix cassandra location